Gecko [ 167.86.127.34 ]

Name	Size	Permission
cgo	[ DIR ]	drwxr-xr-x
debug	[ DIR ]	drwxr-xr-x
internal	[ DIR ]	drwxr-xr-x
msan	[ DIR ]	drwxr-xr-x
pprof	[ DIR ]	drwxr-xr-x
race	[ DIR ]	drwxr-xr-x
testdata	[ DIR ]	drwxr-xr-x
trace	[ DIR ]	drwxr-xr-x
HACKING.md	13.07 KB	-rw-r--r--
Makefile	178 B	-rw-r--r--
alg.go	10.18 KB	-rw-r--r--
asm.s	1.16 KB	-rw-r--r--
asm_386.s	40.2 KB	-rw-r--r--
asm_amd64.s	45.78 KB	-rw-r--r--
asm_arm.s	30.89 KB	-rw-r--r--
asm_arm64.s	33.12 KB	-rw-r--r--
asm_mips64x.s	22.45 KB	-rw-r--r--
asm_mipsx.s	24.72 KB	-rw-r--r--
asm_ppc64x.h	1023 B	-rw-r--r--
asm_ppc64x.s	29.39 KB	-rw-r--r--
asm_riscv64.s	17.38 KB	-rw-r--r--
asm_s390x.s	26.35 KB	-rw-r--r--
asm_wasm.s	9.65 KB	-rw-r--r--
atomic_arm64.s	259 B	-rw-r--r--
atomic_mips64x.s	296 B	-rw-r--r--
atomic_mipsx.s	258 B	-rw-r--r--
atomic_pointer.go	2.62 KB	-rw-r--r--
atomic_ppc64x.s	433 B	-rw-r--r--
atomic_riscv64.s	307 B	-rw-r--r--
auxv_none.go	358 B	-rw-r--r--
callers_test.go	7.7 KB	-rw-r--r--
cgo.go	2.01 KB	-rw-r--r--
cgo_mmap.go	2.38 KB	-rw-r--r--
cgo_ppc64x.go	411 B	-rw-r--r--
cgo_sigaction.go	3.09 KB	-rw-r--r--
cgocall.go	21.38 KB	-rw-r--r--
cgocallback.go	317 B	-rw-r--r--
cgocheck.go	6.8 KB	-rw-r--r--
chan.go	19.71 KB	-rw-r--r--
chan_test.go	21.27 KB	-rw-r--r--
chanbarrier_test.go	1.4 KB	-rw-r--r--
checkptr.go	2.5 KB	-rw-r--r--
checkptr_test.go	1.27 KB	-rw-r--r--
closure_test.go	936 B	-rw-r--r--
compiler.go	413 B	-rw-r--r--
complex.go	1.59 KB	-rw-r--r--
complex_test.go	1.05 KB	-rw-r--r--
cpuflags.go	740 B	-rw-r--r--
cpuflags_amd64.go	533 B	-rw-r--r--
cpuprof.go	6.65 KB	-rw-r--r--
cputicks.go	478 B	-rw-r--r--
crash_cgo_test.go	13.71 KB	-rw-r--r--
crash_nonunix_test.go	385 B	-rw-r--r--
crash_test.go	20.24 KB	-rw-r--r--
crash_unix_test.go	8.89 KB	-rw-r--r--
debug.go	1.63 KB	-rw-r--r--
debug_test.go	6.16 KB	-rw-r--r--
debugcall.go	2.83 KB	-rw-r--r--
debuglog.go	17.08 KB	-rw-r--r--
debuglog_off.go	356 B	-rw-r--r--
debuglog_on.go	1.09 KB	-rw-r--r--
debuglog_test.go	4.56 KB	-rw-r--r--
defer_test.go	9.98 KB	-rw-r--r--
defs1_linux.go	844 B	-rw-r--r--
defs1_netbsd_386.go	2.84 KB	-rw-r--r--
defs1_netbsd_amd64.go	3.07 KB	-rw-r--r--
defs1_netbsd_arm.go	2.96 KB	-rw-r--r--
defs1_netbsd_arm64.go	3.18 KB	-rw-r--r--
defs1_solaris_amd64.go	4.02 KB	-rw-r--r--
defs2_linux.go	3.51 KB	-rw-r--r--
defs3_linux.go	1.09 KB	-rw-r--r--
defs_aix.go	4.16 KB	-rw-r--r--
defs_aix_ppc64.go	3.61 KB	-rw-r--r--
defs_arm_linux.go	2.67 KB	-rw-r--r--
defs_darwin.go	3.84 KB	-rw-r--r--
defs_darwin_386.go	5.98 KB	-rw-r--r--
defs_darwin_amd64.go	6.07 KB	-rw-r--r--
defs_darwin_arm.go	3.78 KB	-rw-r--r--
defs_darwin_arm64.go	3.84 KB	-rw-r--r--
defs_dragonfly.go	2.54 KB	-rw-r--r--
defs_dragonfly_amd64.go	3.25 KB	-rw-r--r--
defs_freebsd.go	3.84 KB	-rw-r--r--
defs_freebsd_386.go	4.35 KB	-rw-r--r--
defs_freebsd_amd64.go	4.62 KB	-rw-r--r--
defs_freebsd_arm.go	3.68 KB	-rw-r--r--
defs_freebsd_arm64.go	4 KB	-rw-r--r--
defs_illumos_amd64.go	285 B	-rw-r--r--
defs_linux.go	3.04 KB	-rw-r--r--
defs_linux_386.go	4.05 KB	-rw-r--r--
defs_linux_amd64.go	4.56 KB	-rw-r--r--
defs_linux_arm.go	3.31 KB	-rw-r--r--
defs_linux_arm64.go	3.23 KB	-rw-r--r--
defs_linux_mips64x.go	3.04 KB	-rw-r--r--
defs_linux_mipsx.go	3.18 KB	-rw-r--r--
defs_linux_ppc64.go	3.28 KB	-rw-r--r--
defs_linux_ppc64le.go	3.28 KB	-rw-r--r--
defs_linux_riscv64.go	3.27 KB	-rw-r--r--
defs_linux_s390x.go	2.76 KB	-rw-r--r--
defs_netbsd.go	2.74 KB	-rw-r--r--
defs_netbsd_386.go	854 B	-rw-r--r--
defs_netbsd_amd64.go	1.01 KB	-rw-r--r--
defs_netbsd_arm.go	763 B	-rw-r--r--
defs_openbsd.go	2.6 KB	-rw-r--r--
defs_openbsd_386.go	2.63 KB	-rw-r--r--
defs_openbsd_amd64.go	2.83 KB	-rw-r--r--
defs_openbsd_arm.go	2.74 KB	-rw-r--r--
defs_openbsd_arm64.go	2.34 KB	-rw-r--r--
defs_plan9_386.go	1.47 KB	-rw-r--r--
defs_plan9_amd64.go	1.66 KB	-rw-r--r--
defs_plan9_arm.go	1.73 KB	-rw-r--r--
defs_solaris.go	3.33 KB	-rw-r--r--
defs_solaris_amd64.go	1003 B	-rw-r--r--
defs_windows.go	2.07 KB	-rw-r--r--
defs_windows_386.go	3.75 KB	-rw-r--r--
defs_windows_amd64.go	4.51 KB	-rw-r--r--
defs_windows_arm.go	3.59 KB	-rw-r--r--
duff_386.s	8.24 KB	-rw-r--r--
duff_amd64.s	5.53 KB	-rw-r--r--
duff_arm.s	7.11 KB	-rw-r--r--
duff_arm64.s	5.25 KB	-rw-r--r--
duff_mips64x.s	11.28 KB	-rw-r--r--
duff_ppc64x.s	2.45 KB	-rw-r--r--
duff_s390x.s	507 B	-rw-r--r--
env_plan9.go	855 B	-rw-r--r--
env_posix.go	1.82 KB	-rw-r--r--
env_test.go	1.28 KB	-rw-r--r--
error.go	7.26 KB	-rw-r--r--
example_test.go	1.34 KB	-rw-r--r--
export_aix_test.go	204 B	-rw-r--r--
export_arm_test.go	226 B	-rw-r--r--
export_darwin_test.go	351 B	-rw-r--r--
export_debug_test.go	5.28 KB	-rw-r--r--
export_debuglog_test.go	1.27 KB	-rw-r--r--
export_futex_test.go	529 B	-rw-r--r--
export_linux_test.go	429 B	-rw-r--r--
export_mmap_test.go	481 B	-rw-r--r--
export_solaris_test.go	282 B	-rw-r--r--
export_test.go	23.58 KB	-rw-r--r--
export_unix_test.go	2.28 KB	-rw-r--r--
export_windows_test.go	652 B	-rw-r--r--
extern.go	11.6 KB	-rw-r--r--
fastlog2.go	1.22 KB	-rw-r--r--
fastlog2_test.go	784 B	-rw-r--r--
fastlog2table.go	904 B	-rw-r--r--
float.go	1.35 KB	-rw-r--r--
funcdata.h	2.44 KB	-rw-r--r--
futex_test.go	2.1 KB	-rw-r--r--
gc_test.go	13.22 KB	-rw-r--r--
gcinfo_test.go	6.18 KB	-rw-r--r--
go_tls.h	366 B	-rw-r--r--
hash32.go	2.51 KB	-rw-r--r--
hash64.go	2.6 KB	-rw-r--r--
hash_test.go	17.54 KB	-rw-r--r--
heapdump.go	17.1 KB	-rw-r--r--
iface.go	15.78 KB	-rw-r--r--
iface_test.go	6.81 KB	-rw-r--r--
lfstack.go	1.77 KB	-rw-r--r--
lfstack_32bit.go	522 B	-rw-r--r--
lfstack_64bit.go	2.15 KB	-rw-r--r--
lfstack_test.go	2.78 KB	-rw-r--r--
libfuzzer.go	2.58 KB	-rw-r--r--
libfuzzer_amd64.s	940 B	-rw-r--r--
libfuzzer_arm64.s	751 B	-rw-r--r--
lock_futex.go	5.06 KB	-rw-r--r--
lock_js.go	5.45 KB	-rw-r--r--
lock_sema.go	6.6 KB	-rw-r--r--
malloc.go	48.32 KB	-rw-r--r--
malloc_test.go	9.37 KB	-rw-r--r--
map.go	42.13 KB	-rw-r--r--
map_benchmark_test.go	10.16 KB	-rw-r--r--
map_fast32.go	12.18 KB	-rw-r--r--
map_fast64.go	12.37 KB	-rw-r--r--
map_faststr.go	13.82 KB	-rw-r--r--
map_test.go	27.11 KB	-rw-r--r--
mbarrier.go	12.14 KB	-rw-r--r--
mbitmap.go	67.53 KB	-rw-r--r--
mcache.go	5.61 KB	-rw-r--r--
mcentral.go	7.14 KB	-rw-r--r--
mem_aix.go	1.93 KB	-rw-r--r--
mem_bsd.go	2.05 KB	-rw-r--r--
mem_darwin.go	1.88 KB	-rw-r--r--
mem_js.go	2.32 KB	-rw-r--r--
mem_linux.go	5.58 KB	-rw-r--r--
mem_plan9.go	4.53 KB	-rw-r--r--
mem_windows.go	3.86 KB	-rw-r--r--
memclr_386.s	2.4 KB	-rw-r--r--
memclr_amd64.s	3.65 KB	-rw-r--r--
memclr_arm.s	2.44 KB	-rw-r--r--
memclr_arm64.s	3.48 KB	-rw-r--r--
memclr_mips64x.s	785 B	-rw-r--r--
memclr_mipsx.s	1.24 KB	-rw-r--r--
memclr_plan9_386.s	905 B	-rw-r--r--
memclr_plan9_amd64.s	433 B	-rw-r--r--
memclr_ppc64x.s	4.2 KB	-rw-r--r--
memclr_riscv64.s	848 B	-rwxr-xr-x
memclr_s390x.s	1.89 KB	-rw-r--r--
memclr_wasm.s	544 B	-rw-r--r--
memmove_386.s	4.45 KB	-rw-r--r--
memmove_amd64.s	12.33 KB	-rw-r--r--
memmove_arm.s	5.9 KB	-rw-r--r--
memmove_arm64.s	3.56 KB	-rw-r--r--
memmove_linux_amd64_test.go	1.61 KB	-rw-r--r--
memmove_mips64x.s	1.82 KB	-rw-r--r--
memmove_mipsx.s	4.39 KB	-rw-r--r--
memmove_plan9_386.s	3.06 KB	-rw-r--r--
memmove_plan9_amd64.s	3.04 KB	-rw-r--r--
memmove_ppc64x.s	3.33 KB	-rw-r--r--
memmove_riscv64.s	1.81 KB	-rwxr-xr-x
memmove_s390x.s	2.92 KB	-rw-r--r--
memmove_test.go	10.97 KB	-rw-r--r--
memmove_wasm.s	1.74 KB	-rw-r--r--
mfinal.go	14.8 KB	-rw-r--r--
mfinal_test.go	5.85 KB	-rw-r--r--
mfixalloc.go	2.72 KB	-rw-r--r--
mgc.go	74.87 KB	-rw-r--r--
mgcmark.go	46.5 KB	-rw-r--r--
mgcscavenge.go	30.95 KB	-rw-r--r--
mgcscavenge_test.go	12.34 KB	-rw-r--r--
mgcstack.go	10.55 KB	-rw-r--r--
mgcsweep.go	14.79 KB	-rw-r--r--
mgcsweepbuf.go	5.98 KB	-rw-r--r--
mgcwork.go	14.24 KB	-rw-r--r--
mheap.go	61.5 KB	-rw-r--r--
mkduff.go	6.23 KB	-rw-r--r--
mkfastlog2table.go	1.32 KB	-rw-r--r--
mkpreempt.go	13.33 KB	-rw-r--r--
mksizeclasses.go	8.62 KB	-rw-r--r--
mmap.go	847 B	-rw-r--r--
mpagealloc.go	35.25 KB	-rw-r--r--
mpagealloc_32bit.go	3.75 KB	-rw-r--r--
mpagealloc_64bit.go	6.51 KB	-rw-r--r--
mpagealloc_test.go	28.88 KB	-rw-r--r--
mpagecache.go	5.03 KB	-rw-r--r--
mpagecache_test.go	9.93 KB	-rw-r--r--
mpallocbits.go	10.69 KB	-rw-r--r--
mpallocbits_test.go	12.93 KB	-rw-r--r--
mprof.go	24.06 KB	-rw-r--r--
mranges.go	5.41 KB	-rw-r--r--
msan.go	1.39 KB	-rw-r--r--
msan0.go	647 B	-rw-r--r--
msan_amd64.s	2.03 KB	-rw-r--r--
msan_arm64.s	1.69 KB	-rw-r--r--
msize.go	785 B	-rw-r--r--
mstats.go	22.62 KB	-rw-r--r--
mwbbuf.go	10.07 KB	-rw-r--r--
nbpipe_fcntl_libc_test.go	463 B	-rw-r--r--
nbpipe_fcntl_unix_test.go	445 B	-rw-r--r--
nbpipe_pipe.go	411 B	-rw-r--r--
nbpipe_pipe2.go	509 B	-rw-r--r--
nbpipe_test.go	2.17 KB	-rw-r--r--
net_plan9.go	645 B	-rw-r--r--
netpoll.go	14.46 KB	-rw-r--r--
netpoll_aix.go	4.64 KB	-rw-r--r--
netpoll_epoll.go	4 KB	-rw-r--r--
netpoll_fake.go	648 B	-rw-r--r--
netpoll_kqueue.go	4.39 KB	-rw-r--r--
netpoll_solaris.go	10.56 KB	-rw-r--r--
netpoll_stub.go	1.3 KB	-rw-r--r--
netpoll_windows.go	4.51 KB	-rw-r--r--
norace_linux_test.go	888 B	-rw-r--r--
norace_test.go	979 B	-rw-r--r--
numcpu_freebsd_test.go	381 B	-rw-r--r--
os2_aix.go	20.67 KB	-rw-r--r--
os2_freebsd.go	302 B	-rw-r--r--
os2_openbsd.go	296 B	-rw-r--r--
os2_plan9.go	1.48 KB	-rw-r--r--
os2_solaris.go	320 B	-rw-r--r--
os3_plan9.go	3.99 KB	-rw-r--r--
os3_solaris.go	16.92 KB	-rw-r--r--
os_aix.go	8.29 KB	-rw-r--r--
os_android.go	463 B	-rw-r--r--
os_darwin.go	10.59 KB	-rw-r--r--
os_darwin_arm.go	749 B	-rw-r--r--
os_darwin_arm64.go	416 B	-rw-r--r--
os_dragonfly.go	6.2 KB	-rw-r--r--
os_freebsd.go	10.97 KB	-rw-r--r--
os_freebsd2.go	478 B	-rw-r--r--
os_freebsd_amd64.go	529 B	-rw-r--r--
os_freebsd_arm.go	1.32 KB	-rw-r--r--
os_freebsd_arm64.go	2.97 KB	-rw-r--r--
os_freebsd_noauxv.go	254 B	-rw-r--r--
os_illumos.go	3.93 KB	-rw-r--r--
os_js.go	2.93 KB	-rw-r--r--
os_linux.go	13.16 KB	-rw-r--r--
os_linux_arm.go	1.35 KB	-rw-r--r--
os_linux_arm64.go	1.02 KB	-rw-r--r--
os_linux_be64.go	816 B	-rw-r--r--
os_linux_generic.go	916 B	-rw-r--r--
os_linux_mips64x.go	999 B	-rw-r--r--
os_linux_mipsx.go	1.05 KB	-rw-r--r--
os_linux_noauxv.go	307 B	-rw-r--r--
os_linux_novdso.go	298 B	-rw-r--r--
os_linux_ppc64x.go	527 B	-rw-r--r--
os_linux_riscv64.go	198 B	-rw-r--r--
os_linux_s390x.go	455 B	-rw-r--r--
os_linux_x86.go	2.69 KB	-rw-r--r--
os_netbsd.go	8.49 KB	-rw-r--r--
os_netbsd_386.go	588 B	-rw-r--r--
os_netbsd_amd64.go	585 B	-rw-r--r--
os_netbsd_arm.go	1.13 KB	-rw-r--r--
os_netbsd_arm64.go	827 B	-rw-r--r--
os_nonopenbsd.go	436 B	-rw-r--r--
os_only_solaris.go	356 B	-rw-r--r--
os_openbsd.go	7.81 KB	-rw-r--r--
os_openbsd_arm.go	749 B	-rw-r--r--
os_openbsd_arm64.go	714 B	-rw-r--r--
os_plan9.go	9.3 KB	-rw-r--r--
os_plan9_arm.go	462 B	-rw-r--r--
os_solaris.go	6.49 KB	-rw-r--r--
os_windows.go	37.01 KB	-rw-r--r--
os_windows_arm.go	511 B	-rw-r--r--
panic.go	42.23 KB	-rw-r--r--
panic32.go	4.79 KB	-rw-r--r--
plugin.go	4.16 KB	-rw-r--r--
preempt.go	14.72 KB	-rw-r--r--
preempt_386.s	983 B	-rw-r--r--
preempt_amd64.s	1.62 KB	-rw-r--r--
preempt_arm.s	1.48 KB	-rw-r--r--
preempt_arm64.s	2.8 KB	-rw-r--r--
preempt_mips64x.s	2.71 KB	-rw-r--r--
preempt_mipsx.s	2.68 KB	-rw-r--r--
preempt_nonwindows.go	289 B	-rw-r--r--
preempt_ppc64x.s	2.71 KB	-rw-r--r--
preempt_riscv64.s	197 B	-rw-r--r--
preempt_s390x.s	1.01 KB	-rw-r--r--
preempt_wasm.s	176 B	-rw-r--r--
print.go	5.98 KB	-rw-r--r--
proc.go	149.75 KB	-rw-r--r--
proc_runtime_test.go	820 B	-rw-r--r--
proc_test.go	22.89 KB	-rw-r--r--
profbuf.go	18.26 KB	-rw-r--r--
profbuf_test.go	8.65 KB	-rw-r--r--
proflabel.go	1.52 KB	-rw-r--r--
race.go	18.11 KB	-rw-r--r--
race0.go	2.61 KB	-rw-r--r--
race_amd64.s	13.59 KB	-rw-r--r--
race_arm64.s	13.53 KB	-rw-r--r--
race_ppc64le.s	17.93 KB	-rw-r--r--
rand_test.go	783 B	-rw-r--r--
rdebug.go	553 B	-rw-r--r--
relax_stub.go	597 B	-rw-r--r--
rt0_aix_ppc64.s	4.33 KB	-rw-r--r--
rt0_android_386.s	822 B	-rw-r--r--
rt0_android_amd64.s	754 B	-rw-r--r--
rt0_android_arm.s	843 B	-rw-r--r--
rt0_android_arm64.s	941 B	-rw-r--r--
rt0_darwin_386.s	452 B	-rw-r--r--
rt0_darwin_amd64.s	399 B	-rw-r--r--
rt0_darwin_arm.s	290 B	-rw-r--r--
rt0_darwin_arm64.s	2.32 KB	-rw-r--r--
rt0_dragonfly_amd64.s	448 B	-rw-r--r--
rt0_freebsd_386.s	454 B	-rw-r--r--
rt0_freebsd_amd64.s	442 B	-rw-r--r--
rt0_freebsd_arm.s	298 B	-rw-r--r--
rt0_freebsd_arm64.s	2.46 KB	-rw-r--r--
rt0_illumos_amd64.s	311 B	-rw-r--r--
rt0_js_wasm.s	2.3 KB	-rw-r--r--
rt0_linux_386.s	450 B	-rw-r--r--
rt0_linux_amd64.s	307 B	-rw-r--r--
rt0_linux_arm.s	1007 B	-rw-r--r--
rt0_linux_arm64.s	2.39 KB	-rw-r--r--
rt0_linux_mips64x.s	1015 B	-rw-r--r--
rt0_linux_mipsx.s	798 B	-rw-r--r--
rt0_linux_ppc64.s	705 B	-rw-r--r--
rt0_linux_ppc64le.s	3.72 KB	-rw-r--r--
rt0_linux_riscv64.s	370 B	-rw-r--r--
rt0_linux_s390x.s	676 B	-rw-r--r--
rt0_netbsd_386.s	452 B	-rw-r--r--
rt0_netbsd_amd64.s	309 B	-rw-r--r--
rt0_netbsd_arm.s	296 B	-rw-r--r--
rt0_netbsd_arm64.s	2.39 KB	-rw-r--r--
rt0_openbsd_386.s	454 B	-rw-r--r--
rt0_openbsd_amd64.s	311 B	-rw-r--r--
rt0_openbsd_arm.s	298 B	-rw-r--r--
rt0_openbsd_arm64.s	2.42 KB	-rw-r--r--
rt0_plan9_386.s	523 B	-rw-r--r--
rt0_plan9_amd64.s	481 B	-rw-r--r--
rt0_plan9_arm.s	397 B	-rw-r--r--
rt0_solaris_amd64.s	311 B	-rw-r--r--
rt0_windows_386.s	1.28 KB	-rw-r--r--
rt0_windows_amd64.s	1.15 KB	-rw-r--r--
rt0_windows_arm.s	386 B	-rw-r--r--
runtime-gdb.py	14.83 KB	-rw-r--r--
runtime-gdb_test.go	16.85 KB	-rw-r--r--
runtime-lldb_test.go	5.09 KB	-rw-r--r--
runtime.go	1.42 KB	-rw-r--r--
runtime1.go	11.97 KB	-rw-r--r--
runtime2.go	37.85 KB	-rw-r--r--
runtime_linux_test.go	1.46 KB	-rw-r--r--
runtime_mmap_test.go	1.82 KB	-rw-r--r--
runtime_test.go	7.81 KB	-rw-r--r--
runtime_unix_test.go	1.2 KB	-rw-r--r--
rwmutex.go	3.4 KB	-rw-r--r--
rwmutex_test.go	4.03 KB	-rw-r--r--
select.go	13.24 KB	-rw-r--r--
sema.go	15.95 KB	-rw-r--r--
sema_test.go	2.41 KB	-rw-r--r--
semasleep_test.go	1.62 KB	-rw-r--r--
sigaction.go	460 B	-rw-r--r--
signal_386.go	2.14 KB	-rw-r--r--
signal_aix_ppc64.go	3.55 KB	-rw-r--r--
signal_amd64.go	2.56 KB	-rw-r--r--
signal_arm.go	2.63 KB	-rw-r--r--
signal_arm64.go	3.12 KB	-rw-r--r--
signal_darwin.go	2.13 KB	-rw-r--r--
signal_darwin_386.go	2.33 KB	-rw-r--r--
signal_darwin_amd64.go	3.85 KB	-rw-r--r--
signal_darwin_arm.go	2.71 KB	-rw-r--r--
signal_darwin_arm64.go	3.6 KB	-rw-r--r--
signal_dragonfly.go	2.17 KB	-rw-r--r--
signal_dragonfly_amd64.go	2.01 KB	-rw-r--r--
signal_freebsd.go	2.2 KB	-rw-r--r--
signal_freebsd_386.go	1.55 KB	-rw-r--r--
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signal_freebsd_arm.go	2.18 KB	-rw-r--r--
signal_freebsd_arm64.go	3.23 KB	-rw-r--r--
signal_linux_386.go	1.59 KB	-rw-r--r--
signal_linux_amd64.go	2.05 KB	-rw-r--r--
signal_linux_arm.go	2.13 KB	-rw-r--r--
signal_linux_arm64.go	2.95 KB	-rw-r--r--
signal_linux_mips64x.go	3.35 KB	-rw-r--r--
signal_linux_mipsx.go	3.67 KB	-rw-r--r--
signal_linux_ppc64x.go	3.42 KB	-rw-r--r--
signal_linux_riscv64.go	2.92 KB	-rw-r--r--
signal_linux_s390x.go	4.45 KB	-rw-r--r--
signal_mips64x.go	3.16 KB	-rw-r--r--
signal_mipsx.go	3.05 KB	-rw-r--r--
signal_netbsd.go	2.18 KB	-rw-r--r--
signal_netbsd_386.go	1.76 KB	-rw-r--r--
signal_netbsd_amd64.go	2.33 KB	-rw-r--r--
signal_netbsd_arm.go	2.3 KB	-rw-r--r--
signal_netbsd_arm64.go	3.4 KB	-rw-r--r--
signal_openbsd.go	2.15 KB	-rw-r--r--
signal_openbsd_386.go	1.58 KB	-rw-r--r--
signal_openbsd_amd64.go	2.04 KB	-rw-r--r--
signal_openbsd_arm.go	2.12 KB	-rw-r--r--
signal_openbsd_arm64.go	3.38 KB	-rw-r--r--
signal_plan9.go	1.93 KB	-rw-r--r--
signal_ppc64x.go	3.61 KB	-rw-r--r--
signal_riscv64.go	2.45 KB	-rw-r--r--
signal_solaris.go	4.5 KB	-rw-r--r--
signal_solaris_amd64.go	2.47 KB	-rw-r--r--
signal_unix.go	35.95 KB	-rw-r--r--
signal_windows.go	8.54 KB	-rw-r--r--
signal_windows_test.go	1.6 KB	-rw-r--r--
sigqueue.go	7.69 KB	-rw-r--r--
sigqueue_note.go	654 B	-rw-r--r--
sigqueue_plan9.go	3.31 KB	-rw-r--r--
sigtab_aix.go	11.3 KB	-rw-r--r--
sigtab_linux_generic.go	3.49 KB	-rw-r--r--
sigtab_linux_mipsx.go	5.89 KB	-rw-r--r--
sizeclasses.go	7.9 KB	-rw-r--r--
sizeof_test.go	839 B	-rw-r--r--
slice.go	6.88 KB	-rw-r--r--
slice_test.go	8.78 KB	-rw-r--r--
softfloat64.go	10.7 KB	-rw-r--r--
softfloat64_test.go	4.05 KB	-rw-r--r--
stack.go	39.14 KB	-rw-r--r--
stack_test.go	19.9 KB	-rw-r--r--
string.go	11.52 KB	-rw-r--r--
string_test.go	10.35 KB	-rw-r--r--
stubs.go	13.08 KB	-rw-r--r--
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stubs32.go	393 B	-rw-r--r--
stubs_386.go	490 B	-rw-r--r--
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stubs_linux.go	646 B	-rw-r--r--
stubs_mips64x.go	283 B	-rw-r--r--
stubs_mipsx.go	279 B	-rw-r--r--
stubs_nonlinux.go	297 B	-rw-r--r--
stubs_ppc64x.go	296 B	-rw-r--r--
stubs_s390x.go	256 B	-rw-r--r--
symtab.go	28.32 KB	-rw-r--r--
symtab_test.go	4.1 KB	-rw-r--r--
sys_aix_ppc64.s	7.17 KB	-rw-r--r--
sys_arm.go	521 B	-rw-r--r--
sys_arm64.go	469 B	-rw-r--r--
sys_darwin.go	15.96 KB	-rw-r--r--
sys_darwin_32.go	533 B	-rw-r--r--
sys_darwin_386.s	18.55 KB	-rw-r--r--
sys_darwin_64.go	513 B	-rw-r--r--
sys_darwin_amd64.s	18.07 KB	-rw-r--r--
sys_darwin_arm.s	13.7 KB	-rw-r--r--
sys_darwin_arm64.s	15.84 KB	-rw-r--r--
sys_dragonfly_amd64.s	8.32 KB	-rw-r--r--
sys_freebsd_386.s	8.92 KB	-rw-r--r--
sys_freebsd_amd64.s	10.72 KB	-rw-r--r--
sys_freebsd_arm.s	10.64 KB	-rw-r--r--
sys_freebsd_arm64.s	10.75 KB	-rw-r--r--
sys_linux_386.s	17.57 KB	-rw-r--r--
sys_linux_amd64.s	17.07 KB	-rw-r--r--
sys_linux_arm.s	14.9 KB	-rw-r--r--
sys_linux_arm64.s	14.32 KB	-rw-r--r--
sys_linux_mips64x.s	12 KB	-rw-r--r--
sys_linux_mipsx.s	11.13 KB	-rw-r--r--
sys_linux_ppc64x.s	14.71 KB	-rw-r--r--
sys_linux_riscv64.s	10.38 KB	-rw-r--r--

Code Editor : export_test.go

// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Export guts for testing.

package runtime

import (
	"runtime/internal/atomic"
	"runtime/internal/sys"
	"unsafe"
)

var Fadd64 = fadd64
var Fsub64 = fsub64
var Fmul64 = fmul64
var Fdiv64 = fdiv64
var F64to32 = f64to32
var F32to64 = f32to64
var Fcmp64 = fcmp64
var Fintto64 = fintto64
var F64toint = f64toint

var Entersyscall = entersyscall
var Exitsyscall = exitsyscall
var LockedOSThread = lockedOSThread
var Xadduintptr = atomic.Xadduintptr

var FuncPC = funcPC

var Fastlog2 = fastlog2

var Atoi = atoi
var Atoi32 = atoi32

var Nanotime = nanotime
var NetpollBreak = netpollBreak
var Usleep = usleep

var PhysPageSize = physPageSize
var PhysHugePageSize = physHugePageSize

var NetpollGenericInit = netpollGenericInit

var ParseRelease = parseRelease

var Memmove = memmove
var MemclrNoHeapPointers = memclrNoHeapPointers

const PreemptMSupported = preemptMSupported

type LFNode struct {
	Next    uint64
	Pushcnt uintptr
}

func LFStackPush(head *uint64, node *LFNode) {
	(*lfstack)(head).push((*lfnode)(unsafe.Pointer(node)))
}

func LFStackPop(head *uint64) *LFNode {
	return (*LFNode)(unsafe.Pointer((*lfstack)(head).pop()))
}

func Netpoll(delta int64) {
	systemstack(func() {
		netpoll(delta)
	})
}

func GCMask(x interface{}) (ret []byte) {
	systemstack(func() {
		ret = getgcmask(x)
	})
	return
}

func RunSchedLocalQueueTest() {
	_p_ := new(p)
	gs := make([]g, len(_p_.runq))
	for i := 0; i < len(_p_.runq); i++ {
		if g, _ := runqget(_p_); g != nil {
			throw("runq is not empty initially")
		}
		for j := 0; j < i; j++ {
			runqput(_p_, &gs[i], false)
		}
		for j := 0; j < i; j++ {
			if g, _ := runqget(_p_); g != &gs[i] {
				print("bad element at iter ", i, "/", j, "\n")
				throw("bad element")
			}
		}
		if g, _ := runqget(_p_); g != nil {
			throw("runq is not empty afterwards")
		}
	}
}

func RunSchedLocalQueueStealTest() {
	p1 := new(p)
	p2 := new(p)
	gs := make([]g, len(p1.runq))
	for i := 0; i < len(p1.runq); i++ {
		for j := 0; j < i; j++ {
			gs[j].sig = 0
			runqput(p1, &gs[j], false)
		}
		gp := runqsteal(p2, p1, true)
		s := 0
		if gp != nil {
			s++
			gp.sig++
		}
		for {
			gp, _ = runqget(p2)
			if gp == nil {
				break
			}
			s++
			gp.sig++
		}
		for {
			gp, _ = runqget(p1)
			if gp == nil {
				break
			}
			gp.sig++
		}
		for j := 0; j < i; j++ {
			if gs[j].sig != 1 {
				print("bad element ", j, "(", gs[j].sig, ") at iter ", i, "\n")
				throw("bad element")
			}
		}
		if s != i/2 && s != i/2+1 {
			print("bad steal ", s, ", want ", i/2, " or ", i/2+1, ", iter ", i, "\n")
			throw("bad steal")
		}
	}
}

func RunSchedLocalQueueEmptyTest(iters int) {
	// Test that runq is not spuriously reported as empty.
	// Runq emptiness affects scheduling decisions and spurious emptiness
	// can lead to underutilization (both runnable Gs and idle Ps coexist
	// for arbitrary long time).
	done := make(chan bool, 1)
	p := new(p)
	gs := make([]g, 2)
	ready := new(uint32)
	for i := 0; i < iters; i++ {
		*ready = 0
		next0 := (i & 1) == 0
		next1 := (i & 2) == 0
		runqput(p, &gs[0], next0)
		go func() {
			for atomic.Xadd(ready, 1); atomic.Load(ready) != 2; {
			}
			if runqempty(p) {
				println("next:", next0, next1)
				throw("queue is empty")
			}
			done <- true
		}()
		for atomic.Xadd(ready, 1); atomic.Load(ready) != 2; {
		}
		runqput(p, &gs[1], next1)
		runqget(p)
		<-done
		runqget(p)
	}
}

var (
	StringHash = stringHash
	BytesHash  = bytesHash
	Int32Hash  = int32Hash
	Int64Hash  = int64Hash
	MemHash    = memhash
	MemHash32  = memhash32
	MemHash64  = memhash64
	EfaceHash  = efaceHash
	IfaceHash  = ifaceHash
)

var UseAeshash = &useAeshash

func MemclrBytes(b []byte) {
	s := (*slice)(unsafe.Pointer(&b))
	memclrNoHeapPointers(s.array, uintptr(s.len))
}

var HashLoad = &hashLoad

// entry point for testing
func GostringW(w []uint16) (s string) {
	systemstack(func() {
		s = gostringw(&w[0])
	})
	return
}

type Uintreg sys.Uintreg

var Open = open
var Close = closefd
var Read = read
var Write = write

func Envs() []string     { return envs }
func SetEnvs(e []string) { envs = e }

var BigEndian = sys.BigEndian

// For benchmarking.

func BenchSetType(n int, x interface{}) {
	e := *efaceOf(&x)
	t := e._type
	var size uintptr
	var p unsafe.Pointer
	switch t.kind & kindMask {
	case kindPtr:
		t = (*ptrtype)(unsafe.Pointer(t)).elem
		size = t.size
		p = e.data
	case kindSlice:
		slice := *(*struct {
			ptr      unsafe.Pointer
			len, cap uintptr
		})(e.data)
		t = (*slicetype)(unsafe.Pointer(t)).elem
		size = t.size * slice.len
		p = slice.ptr
	}
	allocSize := roundupsize(size)
	systemstack(func() {
		for i := 0; i < n; i++ {
			heapBitsSetType(uintptr(p), allocSize, size, t)
		}
	})
}

const PtrSize = sys.PtrSize

var ForceGCPeriod = &forcegcperiod

// SetTracebackEnv is like runtime/debug.SetTraceback, but it raises
// the "environment" traceback level, so later calls to
// debug.SetTraceback (e.g., from testing timeouts) can't lower it.
func SetTracebackEnv(level string) {
	setTraceback(level)
	traceback_env = traceback_cache
}

var ReadUnaligned32 = readUnaligned32
var ReadUnaligned64 = readUnaligned64

func CountPagesInUse() (pagesInUse, counted uintptr) {
	stopTheWorld("CountPagesInUse")

pagesInUse = uintptr(mheap_.pagesInUse)

for _, s := range mheap_.allspans {
		if s.state.get() == mSpanInUse {
			counted += s.npages
		}
	}

startTheWorld()

return
}

func Fastrand() uint32          { return fastrand() }
func Fastrandn(n uint32) uint32 { return fastrandn(n) }

type ProfBuf profBuf

func NewProfBuf(hdrsize, bufwords, tags int) *ProfBuf {
	return (*ProfBuf)(newProfBuf(hdrsize, bufwords, tags))
}

func (p *ProfBuf) Write(tag *unsafe.Pointer, now int64, hdr []uint64, stk []uintptr) {
	(*profBuf)(p).write(tag, now, hdr, stk)
}

const (
	ProfBufBlocking    = profBufBlocking
	ProfBufNonBlocking = profBufNonBlocking
)

func (p *ProfBuf) Read(mode profBufReadMode) ([]uint64, []unsafe.Pointer, bool) {
	return (*profBuf)(p).read(profBufReadMode(mode))
}

func (p *ProfBuf) Close() {
	(*profBuf)(p).close()
}

// ReadMemStatsSlow returns both the runtime-computed MemStats and
// MemStats accumulated by scanning the heap.
func ReadMemStatsSlow() (base, slow MemStats) {
	stopTheWorld("ReadMemStatsSlow")

// Run on the system stack to avoid stack growth allocation.
	systemstack(func() {
		// Make sure stats don't change.
		getg().m.mallocing++

readmemstats_m(&base)

// Initialize slow from base and zero the fields we're
		// recomputing.
		slow = base
		slow.Alloc = 0
		slow.TotalAlloc = 0
		slow.Mallocs = 0
		slow.Frees = 0
		slow.HeapReleased = 0
		var bySize [_NumSizeClasses]struct {
			Mallocs, Frees uint64
		}

// Add up current allocations in spans.
		for _, s := range mheap_.allspans {
			if s.state.get() != mSpanInUse {
				continue
			}
			if sizeclass := s.spanclass.sizeclass(); sizeclass == 0 {
				slow.Mallocs++
				slow.Alloc += uint64(s.elemsize)
			} else {
				slow.Mallocs += uint64(s.allocCount)
				slow.Alloc += uint64(s.allocCount) * uint64(s.elemsize)
				bySize[sizeclass].Mallocs += uint64(s.allocCount)
			}
		}

// Add in frees. readmemstats_m flushed the cached stats, so
		// these are up-to-date.
		var smallFree uint64
		slow.Frees = mheap_.nlargefree
		for i := range mheap_.nsmallfree {
			slow.Frees += mheap_.nsmallfree[i]
			bySize[i].Frees = mheap_.nsmallfree[i]
			bySize[i].Mallocs += mheap_.nsmallfree[i]
			smallFree += mheap_.nsmallfree[i] * uint64(class_to_size[i])
		}
		slow.Frees += memstats.tinyallocs
		slow.Mallocs += slow.Frees

slow.TotalAlloc = slow.Alloc + mheap_.largefree + smallFree

for i := range slow.BySize {
			slow.BySize[i].Mallocs = bySize[i].Mallocs
			slow.BySize[i].Frees = bySize[i].Frees
		}

for i := mheap_.pages.start; i < mheap_.pages.end; i++ {
			pg := mheap_.pages.chunkOf(i).scavenged.popcntRange(0, pallocChunkPages)
			slow.HeapReleased += uint64(pg) * pageSize
		}
		for _, p := range allp {
			pg := sys.OnesCount64(p.pcache.scav)
			slow.HeapReleased += uint64(pg) * pageSize
		}

// Unused space in the current arena also counts as released space.
		slow.HeapReleased += uint64(mheap_.curArena.end - mheap_.curArena.base)

getg().m.mallocing--
	})

startTheWorld()
	return
}

// BlockOnSystemStack switches to the system stack, prints "x\n" to
// stderr, and blocks in a stack containing
// "runtime.blockOnSystemStackInternal".
func BlockOnSystemStack() {
	systemstack(blockOnSystemStackInternal)
}

func blockOnSystemStackInternal() {
	print("x\n")
	lock(&deadlock)
	lock(&deadlock)
}

type RWMutex struct {
	rw rwmutex
}

func (rw *RWMutex) RLock() {
	rw.rw.rlock()
}

func (rw *RWMutex) RUnlock() {
	rw.rw.runlock()
}

func (rw *RWMutex) Lock() {
	rw.rw.lock()
}

func (rw *RWMutex) Unlock() {
	rw.rw.unlock()
}

const RuntimeHmapSize = unsafe.Sizeof(hmap{})

func MapBucketsCount(m map[int]int) int {
	h := *(**hmap)(unsafe.Pointer(&m))
	return 1 << h.B
}

func MapBucketsPointerIsNil(m map[int]int) bool {
	h := *(**hmap)(unsafe.Pointer(&m))
	return h.buckets == nil
}

func LockOSCounts() (external, internal uint32) {
	g := getg()
	if g.m.lockedExt+g.m.lockedInt == 0 {
		if g.lockedm != 0 {
			panic("lockedm on non-locked goroutine")
		}
	} else {
		if g.lockedm == 0 {
			panic("nil lockedm on locked goroutine")
		}
	}
	return g.m.lockedExt, g.m.lockedInt
}

//go:noinline
func TracebackSystemstack(stk []uintptr, i int) int {
	if i == 0 {
		pc, sp := getcallerpc(), getcallersp()
		return gentraceback(pc, sp, 0, getg(), 0, &stk[0], len(stk), nil, nil, _TraceJumpStack)
	}
	n := 0
	systemstack(func() {
		n = TracebackSystemstack(stk, i-1)
	})
	return n
}

func KeepNArenaHints(n int) {
	hint := mheap_.arenaHints
	for i := 1; i < n; i++ {
		hint = hint.next
		if hint == nil {
			return
		}
	}
	hint.next = nil
}

// MapNextArenaHint reserves a page at the next arena growth hint,
// preventing the arena from growing there, and returns the range of
// addresses that are no longer viable.
func MapNextArenaHint() (start, end uintptr) {
	hint := mheap_.arenaHints
	addr := hint.addr
	if hint.down {
		start, end = addr-heapArenaBytes, addr
		addr -= physPageSize
	} else {
		start, end = addr, addr+heapArenaBytes
	}
	sysReserve(unsafe.Pointer(addr), physPageSize)
	return
}

func GetNextArenaHint() uintptr {
	return mheap_.arenaHints.addr
}

type G = g

func Getg() *G {
	return getg()
}

//go:noinline
func PanicForTesting(b []byte, i int) byte {
	return unexportedPanicForTesting(b, i)
}

//go:noinline
func unexportedPanicForTesting(b []byte, i int) byte {
	return b[i]
}

func G0StackOverflow() {
	systemstack(func() {
		stackOverflow(nil)
	})
}

func stackOverflow(x *byte) {
	var buf [256]byte
	stackOverflow(&buf[0])
}

func MapTombstoneCheck(m map[int]int) {
	// Make sure emptyOne and emptyRest are distributed correctly.
	// We should have a series of filled and emptyOne cells, followed by
	// a series of emptyRest cells.
	h := *(**hmap)(unsafe.Pointer(&m))
	i := interface{}(m)
	t := *(**maptype)(unsafe.Pointer(&i))

for x := 0; x < 1<<h.B; x++ {
		b0 := (*bmap)(add(h.buckets, uintptr(x)*uintptr(t.bucketsize)))
		n := 0
		for b := b0; b != nil; b = b.overflow(t) {
			for i := 0; i < bucketCnt; i++ {
				if b.tophash[i] != emptyRest {
					n++
				}
			}
		}
		k := 0
		for b := b0; b != nil; b = b.overflow(t) {
			for i := 0; i < bucketCnt; i++ {
				if k < n && b.tophash[i] == emptyRest {
					panic("early emptyRest")
				}
				if k >= n && b.tophash[i] != emptyRest {
					panic("late non-emptyRest")
				}
				if k == n-1 && b.tophash[i] == emptyOne {
					panic("last non-emptyRest entry is emptyOne")
				}
				k++
			}
		}
	}
}

func RunGetgThreadSwitchTest() {
	// Test that getg works correctly with thread switch.
	// With gccgo, if we generate getg inlined, the backend
	// may cache the address of the TLS variable, which
	// will become invalid after a thread switch. This test
	// checks that the bad caching doesn't happen.

ch := make(chan int)
	go func(ch chan int) {
		ch <- 5
		LockOSThread()
	}(ch)

g1 := getg()

// Block on a receive. This is likely to get us a thread
	// switch. If we yield to the sender goroutine, it will
	// lock the thread, forcing us to resume on a different
	// thread.
	<-ch

g2 := getg()
	if g1 != g2 {
		panic("g1 != g2")
	}

// Also test getg after some control flow, as the
	// backend is sensitive to control flow.
	g3 := getg()
	if g1 != g3 {
		panic("g1 != g3")
	}
}

const (
	PageSize         = pageSize
	PallocChunkPages = pallocChunkPages
	PageAlloc64Bit   = pageAlloc64Bit
	PallocSumBytes   = pallocSumBytes
)

// Expose pallocSum for testing.
type PallocSum pallocSum

func PackPallocSum(start, max, end uint) PallocSum { return PallocSum(packPallocSum(start, max, end)) }
func (m PallocSum) Start() uint                    { return pallocSum(m).start() }
func (m PallocSum) Max() uint                      { return pallocSum(m).max() }
func (m PallocSum) End() uint                      { return pallocSum(m).end() }

// Expose pallocBits for testing.
type PallocBits pallocBits

func (b *PallocBits) Find(npages uintptr, searchIdx uint) (uint, uint) {
	return (*pallocBits)(b).find(npages, searchIdx)
}
func (b *PallocBits) AllocRange(i, n uint)       { (*pallocBits)(b).allocRange(i, n) }
func (b *PallocBits) Free(i, n uint)             { (*pallocBits)(b).free(i, n) }
func (b *PallocBits) Summarize() PallocSum       { return PallocSum((*pallocBits)(b).summarize()) }
func (b *PallocBits) PopcntRange(i, n uint) uint { return (*pageBits)(b).popcntRange(i, n) }

// SummarizeSlow is a slow but more obviously correct implementation
// of (*pallocBits).summarize. Used for testing.
func SummarizeSlow(b *PallocBits) PallocSum {
	var start, max, end uint

const N = uint(len(b)) * 64
	for start < N && (*pageBits)(b).get(start) == 0 {
		start++
	}
	for end < N && (*pageBits)(b).get(N-end-1) == 0 {
		end++
	}
	run := uint(0)
	for i := uint(0); i < N; i++ {
		if (*pageBits)(b).get(i) == 0 {
			run++
		} else {
			run = 0
		}
		if run > max {
			max = run
		}
	}
	return PackPallocSum(start, max, end)
}

// Expose non-trivial helpers for testing.
func FindBitRange64(c uint64, n uint) uint { return findBitRange64(c, n) }

// Given two PallocBits, returns a set of bit ranges where
// they differ.
func DiffPallocBits(a, b *PallocBits) []BitRange {
	ba := (*pageBits)(a)
	bb := (*pageBits)(b)

var d []BitRange
	base, size := uint(0), uint(0)
	for i := uint(0); i < uint(len(ba))*64; i++ {
		if ba.get(i) != bb.get(i) {
			if size == 0 {
				base = i
			}
			size++
		} else {
			if size != 0 {
				d = append(d, BitRange{base, size})
			}
			size = 0
		}
	}
	if size != 0 {
		d = append(d, BitRange{base, size})
	}
	return d
}

// StringifyPallocBits gets the bits in the bit range r from b,
// and returns a string containing the bits as ASCII 0 and 1
// characters.
func StringifyPallocBits(b *PallocBits, r BitRange) string {
	str := ""
	for j := r.I; j < r.I+r.N; j++ {
		if (*pageBits)(b).get(j) != 0 {
			str += "1"
		} else {
			str += "0"
		}
	}
	return str
}

// Expose pallocData for testing.
type PallocData pallocData

func (d *PallocData) FindScavengeCandidate(searchIdx uint, min, max uintptr) (uint, uint) {
	return (*pallocData)(d).findScavengeCandidate(searchIdx, min, max)
}
func (d *PallocData) AllocRange(i, n uint) { (*pallocData)(d).allocRange(i, n) }
func (d *PallocData) ScavengedSetRange(i, n uint) {
	(*pallocData)(d).scavenged.setRange(i, n)
}
func (d *PallocData) PallocBits() *PallocBits {
	return (*PallocBits)(&(*pallocData)(d).pallocBits)
}
func (d *PallocData) Scavenged() *PallocBits {
	return (*PallocBits)(&(*pallocData)(d).scavenged)
}

// Expose fillAligned for testing.
func FillAligned(x uint64, m uint) uint64 { return fillAligned(x, m) }

// Expose pageCache for testing.
type PageCache pageCache

const PageCachePages = pageCachePages

func NewPageCache(base uintptr, cache, scav uint64) PageCache {
	return PageCache(pageCache{base: base, cache: cache, scav: scav})
}
func (c *PageCache) Empty() bool   { return (*pageCache)(c).empty() }
func (c *PageCache) Base() uintptr { return (*pageCache)(c).base }
func (c *PageCache) Cache() uint64 { return (*pageCache)(c).cache }
func (c *PageCache) Scav() uint64  { return (*pageCache)(c).scav }
func (c *PageCache) Alloc(npages uintptr) (uintptr, uintptr) {
	return (*pageCache)(c).alloc(npages)
}
func (c *PageCache) Flush(s *PageAlloc) {
	(*pageCache)(c).flush((*pageAlloc)(s))
}

// Expose chunk index type.
type ChunkIdx chunkIdx

// Expose pageAlloc for testing. Note that because pageAlloc is
// not in the heap, so is PageAlloc.
type PageAlloc pageAlloc

func (p *PageAlloc) Alloc(npages uintptr) (uintptr, uintptr) {
	return (*pageAlloc)(p).alloc(npages)
}
func (p *PageAlloc) AllocToCache() PageCache {
	return PageCache((*pageAlloc)(p).allocToCache())
}
func (p *PageAlloc) Free(base, npages uintptr) {
	(*pageAlloc)(p).free(base, npages)
}
func (p *PageAlloc) Bounds() (ChunkIdx, ChunkIdx) {
	return ChunkIdx((*pageAlloc)(p).start), ChunkIdx((*pageAlloc)(p).end)
}
func (p *PageAlloc) Scavenge(nbytes uintptr, locked bool) (r uintptr) {
	systemstack(func() {
		r = (*pageAlloc)(p).scavenge(nbytes, locked)
	})
	return
}
func (p *PageAlloc) InUse() []AddrRange {
	ranges := make([]AddrRange, 0, len(p.inUse.ranges))
	for _, r := range p.inUse.ranges {
		ranges = append(ranges, AddrRange{
			Base:  r.base,
			Limit: r.limit,
		})
	}
	return ranges
}

// Returns nil if the PallocData's L2 is missing.
func (p *PageAlloc) PallocData(i ChunkIdx) *PallocData {
	ci := chunkIdx(i)
	l2 := (*pageAlloc)(p).chunks[ci.l1()]
	if l2 == nil {
		return nil
	}
	return (*PallocData)(&l2[ci.l2()])
}

// AddrRange represents a range over addresses.
// Specifically, it represents the range [Base, Limit).
type AddrRange struct {
	Base, Limit uintptr
}

// BitRange represents a range over a bitmap.
type BitRange struct {
	I, N uint // bit index and length in bits
}

// NewPageAlloc creates a new page allocator for testing and
// initializes it with the scav and chunks maps. Each key in these maps
// represents a chunk index and each value is a series of bit ranges to
// set within each bitmap's chunk.
//
// The initialization of the pageAlloc preserves the invariant that if a
// scavenged bit is set the alloc bit is necessarily unset, so some
// of the bits described by scav may be cleared in the final bitmap if
// ranges in chunks overlap with them.
//
// scav is optional, and if nil, the scavenged bitmap will be cleared
// (as opposed to all 1s, which it usually is). Furthermore, every
// chunk index in scav must appear in chunks; ones that do not are
// ignored.
func NewPageAlloc(chunks, scav map[ChunkIdx][]BitRange) *PageAlloc {
	p := new(pageAlloc)

// We've got an entry, so initialize the pageAlloc.
	p.init(new(mutex), nil)
	p.test = true

for i, init := range chunks {
		addr := chunkBase(chunkIdx(i))

// Mark the chunk's existence in the pageAlloc.
		p.grow(addr, pallocChunkBytes)

// Initialize the bitmap and update pageAlloc metadata.
		chunk := p.chunkOf(chunkIndex(addr))

// Clear all the scavenged bits which grow set.
		chunk.scavenged.clearRange(0, pallocChunkPages)

// Apply scavenge state if applicable.
		if scav != nil {
			if scvg, ok := scav[i]; ok {
				for _, s := range scvg {
					// Ignore the case of s.N == 0. setRange doesn't handle
					// it and it's a no-op anyway.
					if s.N != 0 {
						chunk.scavenged.setRange(s.I, s.N)
					}
				}
			}
		}
		p.resetScavengeAddr()

// Apply alloc state.
		for _, s := range init {
			// Ignore the case of s.N == 0. allocRange doesn't handle
			// it and it's a no-op anyway.
			if s.N != 0 {
				chunk.allocRange(s.I, s.N)
			}
		}

// Update heap metadata for the allocRange calls above.
		p.update(addr, pallocChunkPages, false, false)
	}
	return (*PageAlloc)(p)
}

// FreePageAlloc releases hard OS resources owned by the pageAlloc. Once this
// is called the pageAlloc may no longer be used. The object itself will be
// collected by the garbage collector once it is no longer live.
func FreePageAlloc(pp *PageAlloc) {
	p := (*pageAlloc)(pp)

// Free all the mapped space for the summary levels.
	if pageAlloc64Bit != 0 {
		for l := 0; l < summaryLevels; l++ {
			sysFree(unsafe.Pointer(&p.summary[l][0]), uintptr(cap(p.summary[l]))*pallocSumBytes, nil)
		}
	} else {
		resSize := uintptr(0)
		for _, s := range p.summary {
			resSize += uintptr(cap(s)) * pallocSumBytes
		}
		sysFree(unsafe.Pointer(&p.summary[0][0]), alignUp(resSize, physPageSize), nil)
	}

// Free the mapped space for chunks.
	for i := range p.chunks {
		if x := p.chunks[i]; x != nil {
			p.chunks[i] = nil
			// This memory comes from sysAlloc and will always be page-aligned.
			sysFree(unsafe.Pointer(x), unsafe.Sizeof(*p.chunks[0]), nil)
		}
	}
}

// BaseChunkIdx is a convenient chunkIdx value which works on both
// 64 bit and 32 bit platforms, allowing the tests to share code
// between the two.
//
// On AIX, the arenaBaseOffset is 0x0a00000000000000. However, this
// constant can't be used here because it is negative and will cause
// a constant overflow.
//
// This should not be higher than 0x100*pallocChunkBytes to support
// mips and mipsle, which only have 31-bit address spaces.
var BaseChunkIdx = ChunkIdx(chunkIndex(((0xc000*pageAlloc64Bit + 0x100*pageAlloc32Bit) * pallocChunkBytes) + 0x0a00000000000000*sys.GoosAix))

// PageBase returns an address given a chunk index and a page index
// relative to that chunk.
func PageBase(c ChunkIdx, pageIdx uint) uintptr {
	return chunkBase(chunkIdx(c)) + uintptr(pageIdx)*pageSize
}

type BitsMismatch struct {
	Base      uintptr
	Got, Want uint64
}

func CheckScavengedBitsCleared(mismatches []BitsMismatch) (n int, ok bool) {
	ok = true

// Run on the system stack to avoid stack growth allocation.
	systemstack(func() {
		getg().m.mallocing++

// Lock so that we can safely access the bitmap.
		lock(&mheap_.lock)
	chunkLoop:
		for i := mheap_.pages.start; i < mheap_.pages.end; i++ {
			chunk := mheap_.pages.chunkOf(i)
			for j := 0; j < pallocChunkPages/64; j++ {
				// Run over each 64-bit bitmap section and ensure
				// scavenged is being cleared properly on allocation.
				// If a used bit and scavenged bit are both set, that's
				// an error, and could indicate a larger problem, or
				// an accounting problem.
				want := chunk.scavenged[j] &^ chunk.pallocBits[j]
				got := chunk.scavenged[j]
				if want != got {
					ok = false
					if n >= len(mismatches) {
						break chunkLoop
					}
					mismatches[n] = BitsMismatch{
						Base: chunkBase(i) + uintptr(j)*64*pageSize,
						Got:  got,
						Want: want,
					}
					n++
				}
			}
		}
		unlock(&mheap_.lock)

getg().m.mallocing--
	})
	return
}

func PageCachePagesLeaked() (leaked uintptr) {
	stopTheWorld("PageCachePagesLeaked")

// Walk over destroyed Ps and look for unflushed caches.
	deadp := allp[len(allp):cap(allp)]
	for _, p := range deadp {
		// Since we're going past len(allp) we may see nil Ps.
		// Just ignore them.
		if p != nil {
			leaked += uintptr(sys.OnesCount64(p.pcache.cache))
		}
	}

startTheWorld()
	return
}

var Semacquire = semacquire
var Semrelease1 = semrelease1

func SemNwait(addr *uint32) uint32 {
	root := semroot(addr)
	return atomic.Load(&root.nwait)
}

// MapHashCheck computes the hash of the key k for the map m, twice.
// Method 1 uses the built-in hasher for the map.
// Method 2 uses the typehash function (the one used by reflect).
// Returns the two hash values, which should always be equal.
func MapHashCheck(m interface{}, k interface{}) (uintptr, uintptr) {
	// Unpack m.
	mt := (*maptype)(unsafe.Pointer(efaceOf(&m)._type))
	mh := (*hmap)(efaceOf(&m).data)

// Unpack k.
	kt := efaceOf(&k)._type
	var p unsafe.Pointer
	if isDirectIface(kt) {
		q := efaceOf(&k).data
		p = unsafe.Pointer(&q)
	} else {
		p = efaceOf(&k).data
	}

// Compute the hash functions.
	x := mt.hasher(noescape(p), uintptr(mh.hash0))
	y := typehash(kt, noescape(p), uintptr(mh.hash0))
	return x, y
}

${this.title}

Code Editor : export_test.go