Linux vmi284606.contaboserver.net 4.15.0-213-generic #224-Ubuntu SMP Mon Jun 19 13:30:12 UTC 2023 x86_64
Apache/2.4.57 (Ubuntu)
: 167.86.127.34 | : 216.73.217.1
Cant Read [ /etc/named.conf ]
7.2.24-0ubuntu0.18.04.17
root
Terminal
AUTO ROOT
Adminer
Backdoor Destroyer
Linux Exploit
Lock Shell
Lock File
Create User
CREATE RDP
PHP Mailer
BACKCONNECT
UNLOCK SHELL
HASH IDENTIFIER
README
+ Create Folder
+ Create File
/
usr /
local /
go /
src /
runtime /
[ HOME SHELL ]
Name
Size
Permission
Action
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--
signal_freebsd_amd64.go
2.03
KB
-rw-r--r--
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--
stubs2.go
1.04
KB
-rw-r--r--
stubs3.go
289
B
-rw-r--r--
stubs32.go
393
B
-rw-r--r--
stubs_386.go
490
B
-rw-r--r--
stubs_amd64.go
348
B
-rw-r--r--
stubs_arm.go
454
B
-rw-r--r--
stubs_arm64.go
256
B
-rw-r--r--
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--
sys_linux_s390x.s
10.52
KB
-rw-r--r--
sys_mips64x.go
496
B
-rw-r--r--
sys_mipsx.go
492
B
-rw-r--r--
sys_netbsd_386.s
10.04
KB
-rw-r--r--
sys_netbsd_amd64.s
10.03
KB
-rw-r--r--
sys_netbsd_arm.s
10.85
KB
-rw-r--r--
sys_netbsd_arm64.s
10.13
KB
-rw-r--r--
sys_nonppc64x.go
241
B
-rw-r--r--
sys_openbsd_386.s
9.1
KB
-rw-r--r--
sys_openbsd_amd64.s
8.83
KB
-rw-r--r--
sys_openbsd_arm.s
9.63
KB
-rw-r--r--
sys_openbsd_arm64.s
9.55
KB
-rw-r--r--
sys_plan9_386.s
4.41
KB
-rw-r--r--
sys_plan9_amd64.s
4.47
KB
-rw-r--r--
sys_plan9_arm.s
7.03
KB
-rw-r--r--
sys_ppc64x.go
528
B
-rw-r--r--
sys_riscv64.go
469
B
-rw-r--r--
sys_s390x.go
469
B
-rw-r--r--
sys_solaris_amd64.s
6.69
KB
-rw-r--r--
sys_wasm.go
806
B
-rw-r--r--
sys_wasm.s
2.48
KB
-rw-r--r--
sys_windows_386.s
11.55
KB
-rw-r--r--
sys_windows_amd64.s
12.14
KB
-rw-r--r--
sys_windows_arm.s
18.38
KB
-rw-r--r--
sys_x86.go
624
B
-rw-r--r--
syscall2_solaris.go
1.73
KB
-rw-r--r--
syscall_aix.go
5.99
KB
-rw-r--r--
syscall_solaris.go
8.26
KB
-rw-r--r--
syscall_windows.go
6.83
KB
-rw-r--r--
syscall_windows_test.go
27.09
KB
-rw-r--r--
textflag.h
1.46
KB
-rw-r--r--
time.go
29.12
KB
-rw-r--r--
time_fake.go
2.67
KB
-rw-r--r--
time_nofake.go
631
B
-rw-r--r--
time_test.go
1.9
KB
-rw-r--r--
timeasm.go
382
B
-rw-r--r--
timestub.go
497
B
-rw-r--r--
timestub2.go
309
B
-rw-r--r--
tls_arm.s
3.37
KB
-rw-r--r--
tls_arm64.h
985
B
-rw-r--r--
tls_arm64.s
1.07
KB
-rw-r--r--
tls_mips64x.s
729
B
-rw-r--r--
tls_mipsx.s
705
B
-rw-r--r--
tls_ppc64x.s
1.51
KB
-rw-r--r--
tls_riscv64.s
454
B
-rw-r--r--
tls_s390x.s
1.55
KB
-rw-r--r--
trace.go
37.73
KB
-rw-r--r--
traceback.go
44.11
KB
-rw-r--r--
type.go
18.27
KB
-rw-r--r--
typekind.go
742
B
-rw-r--r--
utf8.go
3.39
KB
-rw-r--r--
vdso_elf32.go
2.76
KB
-rw-r--r--
vdso_elf64.go
2.79
KB
-rw-r--r--
vdso_freebsd.go
2.44
KB
-rw-r--r--
vdso_freebsd_arm.go
454
B
-rw-r--r--
vdso_freebsd_arm64.go
443
B
-rw-r--r--
vdso_freebsd_x86.go
1.85
KB
-rw-r--r--
vdso_in_none.go
379
B
-rw-r--r--
vdso_linux.go
7.68
KB
-rw-r--r--
vdso_linux_386.go
669
B
-rw-r--r--
vdso_linux_amd64.go
748
B
-rw-r--r--
vdso_linux_arm.go
669
B
-rw-r--r--
vdso_linux_arm64.go
670
B
-rw-r--r--
vdso_linux_mips64x.go
851
B
-rw-r--r--
vdso_linux_ppc64x.go
673
B
-rw-r--r--
vlop_386.s
2.02
KB
-rw-r--r--
vlop_arm.s
7.06
KB
-rw-r--r--
vlop_arm_test.go
3.75
KB
-rw-r--r--
vlrt.go
6.09
KB
-rw-r--r--
wincallback.go
2.53
KB
-rw-r--r--
write_err.go
290
B
-rw-r--r--
write_err_android.go
4.65
KB
-rw-r--r--
zcallback_windows.go
155
B
-rw-r--r--
zcallback_windows.s
63.02
KB
-rw-r--r--
zcallback_windows_arm.s
89.32
KB
-rw-r--r--
Delete
Unzip
Zip
${this.title}
Close
Code Editor : mfinal.go
// Copyright 2009 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. // Garbage collector: finalizers and block profiling. package runtime import ( "runtime/internal/atomic" "runtime/internal/sys" "unsafe" ) // finblock is an array of finalizers to be executed. finblocks are // arranged in a linked list for the finalizer queue. // // finblock is allocated from non-GC'd memory, so any heap pointers // must be specially handled. GC currently assumes that the finalizer // queue does not grow during marking (but it can shrink). // //go:notinheap type finblock struct { alllink *finblock next *finblock cnt uint32 _ int32 fin [(_FinBlockSize - 2*sys.PtrSize - 2*4) / unsafe.Sizeof(finalizer{})]finalizer } var finlock mutex // protects the following variables var fing *g // goroutine that runs finalizers var finq *finblock // list of finalizers that are to be executed var finc *finblock // cache of free blocks var finptrmask [_FinBlockSize / sys.PtrSize / 8]byte var fingwait bool var fingwake bool var allfin *finblock // list of all blocks // NOTE: Layout known to queuefinalizer. type finalizer struct { fn *funcval // function to call (may be a heap pointer) arg unsafe.Pointer // ptr to object (may be a heap pointer) nret uintptr // bytes of return values from fn fint *_type // type of first argument of fn ot *ptrtype // type of ptr to object (may be a heap pointer) } var finalizer1 = [...]byte{ // Each Finalizer is 5 words, ptr ptr INT ptr ptr (INT = uintptr here) // Each byte describes 8 words. // Need 8 Finalizers described by 5 bytes before pattern repeats: // ptr ptr INT ptr ptr // ptr ptr INT ptr ptr // ptr ptr INT ptr ptr // ptr ptr INT ptr ptr // ptr ptr INT ptr ptr // ptr ptr INT ptr ptr // ptr ptr INT ptr ptr // ptr ptr INT ptr ptr // aka // // ptr ptr INT ptr ptr ptr ptr INT // ptr ptr ptr ptr INT ptr ptr ptr // ptr INT ptr ptr ptr ptr INT ptr // ptr ptr ptr INT ptr ptr ptr ptr // INT ptr ptr ptr ptr INT ptr ptr // // Assumptions about Finalizer layout checked below. 1<<0 | 1<<1 | 0<<2 | 1<<3 | 1<<4 | 1<<5 | 1<<6 | 0<<7, 1<<0 | 1<<1 | 1<<2 | 1<<3 | 0<<4 | 1<<5 | 1<<6 | 1<<7, 1<<0 | 0<<1 | 1<<2 | 1<<3 | 1<<4 | 1<<5 | 0<<6 | 1<<7, 1<<0 | 1<<1 | 1<<2 | 0<<3 | 1<<4 | 1<<5 | 1<<6 | 1<<7, 0<<0 | 1<<1 | 1<<2 | 1<<3 | 1<<4 | 0<<5 | 1<<6 | 1<<7, } func queuefinalizer(p unsafe.Pointer, fn *funcval, nret uintptr, fint *_type, ot *ptrtype) { if gcphase != _GCoff { // Currently we assume that the finalizer queue won't // grow during marking so we don't have to rescan it // during mark termination. If we ever need to lift // this assumption, we can do it by adding the // necessary barriers to queuefinalizer (which it may // have automatically). throw("queuefinalizer during GC") } lock(&finlock) if finq == nil || finq.cnt == uint32(len(finq.fin)) { if finc == nil { finc = (*finblock)(persistentalloc(_FinBlockSize, 0, &memstats.gc_sys)) finc.alllink = allfin allfin = finc if finptrmask[0] == 0 { // Build pointer mask for Finalizer array in block. // Check assumptions made in finalizer1 array above. if (unsafe.Sizeof(finalizer{}) != 5*sys.PtrSize || unsafe.Offsetof(finalizer{}.fn) != 0 || unsafe.Offsetof(finalizer{}.arg) != sys.PtrSize || unsafe.Offsetof(finalizer{}.nret) != 2*sys.PtrSize || unsafe.Offsetof(finalizer{}.fint) != 3*sys.PtrSize || unsafe.Offsetof(finalizer{}.ot) != 4*sys.PtrSize) { throw("finalizer out of sync") } for i := range finptrmask { finptrmask[i] = finalizer1[i%len(finalizer1)] } } } block := finc finc = block.next block.next = finq finq = block } f := &finq.fin[finq.cnt] atomic.Xadd(&finq.cnt, +1) // Sync with markroots f.fn = fn f.nret = nret f.fint = fint f.ot = ot f.arg = p fingwake = true unlock(&finlock) } //go:nowritebarrier func iterate_finq(callback func(*funcval, unsafe.Pointer, uintptr, *_type, *ptrtype)) { for fb := allfin; fb != nil; fb = fb.alllink { for i := uint32(0); i < fb.cnt; i++ { f := &fb.fin[i] callback(f.fn, f.arg, f.nret, f.fint, f.ot) } } } func wakefing() *g { var res *g lock(&finlock) if fingwait && fingwake { fingwait = false fingwake = false res = fing } unlock(&finlock) return res } var ( fingCreate uint32 fingRunning bool ) func createfing() { // start the finalizer goroutine exactly once if fingCreate == 0 && atomic.Cas(&fingCreate, 0, 1) { go runfinq() } } // This is the goroutine that runs all of the finalizers func runfinq() { var ( frame unsafe.Pointer framecap uintptr ) for { lock(&finlock) fb := finq finq = nil if fb == nil { gp := getg() fing = gp fingwait = true goparkunlock(&finlock, waitReasonFinalizerWait, traceEvGoBlock, 1) continue } unlock(&finlock) if raceenabled { racefingo() } for fb != nil { for i := fb.cnt; i > 0; i-- { f := &fb.fin[i-1] framesz := unsafe.Sizeof((interface{})(nil)) + f.nret if framecap < framesz { // The frame does not contain pointers interesting for GC, // all not yet finalized objects are stored in finq. // If we do not mark it as FlagNoScan, // the last finalized object is not collected. frame = mallocgc(framesz, nil, true) framecap = framesz } if f.fint == nil { throw("missing type in runfinq") } // frame is effectively uninitialized // memory. That means we have to clear // it before writing to it to avoid // confusing the write barrier. *(*[2]uintptr)(frame) = [2]uintptr{} switch f.fint.kind & kindMask { case kindPtr: // direct use of pointer *(*unsafe.Pointer)(frame) = f.arg case kindInterface: ityp := (*interfacetype)(unsafe.Pointer(f.fint)) // set up with empty interface (*eface)(frame)._type = &f.ot.typ (*eface)(frame).data = f.arg if len(ityp.mhdr) != 0 { // convert to interface with methods // this conversion is guaranteed to succeed - we checked in SetFinalizer *(*iface)(frame) = assertE2I(ityp, *(*eface)(frame)) } default: throw("bad kind in runfinq") } fingRunning = true reflectcall(nil, unsafe.Pointer(f.fn), frame, uint32(framesz), uint32(framesz)) fingRunning = false // Drop finalizer queue heap references // before hiding them from markroot. // This also ensures these will be // clear if we reuse the finalizer. f.fn = nil f.arg = nil f.ot = nil atomic.Store(&fb.cnt, i-1) } next := fb.next lock(&finlock) fb.next = finc finc = fb unlock(&finlock) fb = next } } } // SetFinalizer sets the finalizer associated with obj to the provided // finalizer function. When the garbage collector finds an unreachable block // with an associated finalizer, it clears the association and runs // finalizer(obj) in a separate goroutine. This makes obj reachable again, // but now without an associated finalizer. Assuming that SetFinalizer // is not called again, the next time the garbage collector sees // that obj is unreachable, it will free obj. // // SetFinalizer(obj, nil) clears any finalizer associated with obj. // // The argument obj must be a pointer to an object allocated by calling // new, by taking the address of a composite literal, or by taking the // address of a local variable. // The argument finalizer must be a function that takes a single argument // to which obj's type can be assigned, and can have arbitrary ignored return // values. If either of these is not true, SetFinalizer may abort the // program. // // Finalizers are run in dependency order: if A points at B, both have // finalizers, and they are otherwise unreachable, only the finalizer // for A runs; once A is freed, the finalizer for B can run. // If a cyclic structure includes a block with a finalizer, that // cycle is not guaranteed to be garbage collected and the finalizer // is not guaranteed to run, because there is no ordering that // respects the dependencies. // // The finalizer is scheduled to run at some arbitrary time after the // program can no longer reach the object to which obj points. // There is no guarantee that finalizers will run before a program exits, // so typically they are useful only for releasing non-memory resources // associated with an object during a long-running program. // For example, an os.File object could use a finalizer to close the // associated operating system file descriptor when a program discards // an os.File without calling Close, but it would be a mistake // to depend on a finalizer to flush an in-memory I/O buffer such as a // bufio.Writer, because the buffer would not be flushed at program exit. // // It is not guaranteed that a finalizer will run if the size of *obj is // zero bytes. // // It is not guaranteed that a finalizer will run for objects allocated // in initializers for package-level variables. Such objects may be // linker-allocated, not heap-allocated. // // A finalizer may run as soon as an object becomes unreachable. // In order to use finalizers correctly, the program must ensure that // the object is reachable until it is no longer required. // Objects stored in global variables, or that can be found by tracing // pointers from a global variable, are reachable. For other objects, // pass the object to a call of the KeepAlive function to mark the // last point in the function where the object must be reachable. // // For example, if p points to a struct that contains a file descriptor d, // and p has a finalizer that closes that file descriptor, and if the last // use of p in a function is a call to syscall.Write(p.d, buf, size), then // p may be unreachable as soon as the program enters syscall.Write. The // finalizer may run at that moment, closing p.d, causing syscall.Write // to fail because it is writing to a closed file descriptor (or, worse, // to an entirely different file descriptor opened by a different goroutine). // To avoid this problem, call runtime.KeepAlive(p) after the call to // syscall.Write. // // A single goroutine runs all finalizers for a program, sequentially. // If a finalizer must run for a long time, it should do so by starting // a new goroutine. func SetFinalizer(obj interface{}, finalizer interface{}) { if debug.sbrk != 0 { // debug.sbrk never frees memory, so no finalizers run // (and we don't have the data structures to record them). return } e := efaceOf(&obj) etyp := e._type if etyp == nil { throw("runtime.SetFinalizer: first argument is nil") } if etyp.kind&kindMask != kindPtr { throw("runtime.SetFinalizer: first argument is " + etyp.string() + ", not pointer") } ot := (*ptrtype)(unsafe.Pointer(etyp)) if ot.elem == nil { throw("nil elem type!") } // find the containing object base, _, _ := findObject(uintptr(e.data), 0, 0) if base == 0 { // 0-length objects are okay. if e.data == unsafe.Pointer(&zerobase) { return } // Global initializers might be linker-allocated. // var Foo = &Object{} // func main() { // runtime.SetFinalizer(Foo, nil) // } // The relevant segments are: noptrdata, data, bss, noptrbss. // We cannot assume they are in any order or even contiguous, // due to external linking. for datap := &firstmoduledata; datap != nil; datap = datap.next { if datap.noptrdata <= uintptr(e.data) && uintptr(e.data) < datap.enoptrdata || datap.data <= uintptr(e.data) && uintptr(e.data) < datap.edata || datap.bss <= uintptr(e.data) && uintptr(e.data) < datap.ebss || datap.noptrbss <= uintptr(e.data) && uintptr(e.data) < datap.enoptrbss { return } } throw("runtime.SetFinalizer: pointer not in allocated block") } if uintptr(e.data) != base { // As an implementation detail we allow to set finalizers for an inner byte // of an object if it could come from tiny alloc (see mallocgc for details). if ot.elem == nil || ot.elem.ptrdata != 0 || ot.elem.size >= maxTinySize { throw("runtime.SetFinalizer: pointer not at beginning of allocated block") } } f := efaceOf(&finalizer) ftyp := f._type if ftyp == nil { // switch to system stack and remove finalizer systemstack(func() { removefinalizer(e.data) }) return } if ftyp.kind&kindMask != kindFunc { throw("runtime.SetFinalizer: second argument is " + ftyp.string() + ", not a function") } ft := (*functype)(unsafe.Pointer(ftyp)) if ft.dotdotdot() { throw("runtime.SetFinalizer: cannot pass " + etyp.string() + " to finalizer " + ftyp.string() + " because dotdotdot") } if ft.inCount != 1 { throw("runtime.SetFinalizer: cannot pass " + etyp.string() + " to finalizer " + ftyp.string()) } fint := ft.in()[0] switch { case fint == etyp: // ok - same type goto okarg case fint.kind&kindMask == kindPtr: if (fint.uncommon() == nil || etyp.uncommon() == nil) && (*ptrtype)(unsafe.Pointer(fint)).elem == ot.elem { // ok - not same type, but both pointers, // one or the other is unnamed, and same element type, so assignable. goto okarg } case fint.kind&kindMask == kindInterface: ityp := (*interfacetype)(unsafe.Pointer(fint)) if len(ityp.mhdr) == 0 { // ok - satisfies empty interface goto okarg } if _, ok := assertE2I2(ityp, *efaceOf(&obj)); ok { goto okarg } } throw("runtime.SetFinalizer: cannot pass " + etyp.string() + " to finalizer " + ftyp.string()) okarg: // compute size needed for return parameters nret := uintptr(0) for _, t := range ft.out() { nret = alignUp(nret, uintptr(t.align)) + uintptr(t.size) } nret = alignUp(nret, sys.PtrSize) // make sure we have a finalizer goroutine createfing() systemstack(func() { if !addfinalizer(e.data, (*funcval)(f.data), nret, fint, ot) { throw("runtime.SetFinalizer: finalizer already set") } }) } // Mark KeepAlive as noinline so that it is easily detectable as an intrinsic. //go:noinline // KeepAlive marks its argument as currently reachable. // This ensures that the object is not freed, and its finalizer is not run, // before the point in the program where KeepAlive is called. // // A very simplified example showing where KeepAlive is required: // type File struct { d int } // d, err := syscall.Open("/file/path", syscall.O_RDONLY, 0) // // ... do something if err != nil ... // p := &File{d} // runtime.SetFinalizer(p, func(p *File) { syscall.Close(p.d) }) // var buf [10]byte // n, err := syscall.Read(p.d, buf[:]) // // Ensure p is not finalized until Read returns. // runtime.KeepAlive(p) // // No more uses of p after this point. // // Without the KeepAlive call, the finalizer could run at the start of // syscall.Read, closing the file descriptor before syscall.Read makes // the actual system call. func KeepAlive(x interface{}) { // Introduce a use of x that the compiler can't eliminate. // This makes sure x is alive on entry. We need x to be alive // on entry for "defer runtime.KeepAlive(x)"; see issue 21402. if cgoAlwaysFalse { println(x) } }
Close