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Current Path: /opt/golang/1.17.2/src/runtime

📁 ..
📄 HACKING.md(13.07 KB)
📄 Makefile(178 B)
📄 abi_test.go(2.88 KB)
📄 alg.go(9.45 KB)
📄 asm.s(715 B)
📄 asm_386.s(40.27 KB)
📄 asm_amd64.s(56.93 KB)
📄 asm_arm.s(30.23 KB)
📄 asm_arm64.s(33 KB)
📄 asm_mips64x.s(22.43 KB)
📄 asm_mipsx.s(24.39 KB)
📄 asm_ppc64x.h(1023 B)
📄 asm_ppc64x.s(29.16 KB)
📄 asm_riscv64.s(22.43 KB)
📄 asm_s390x.s(26.04 KB)
📄 asm_wasm.s(9.8 KB)
📄 atomic_arm64.s(259 B)
📄 atomic_mips64x.s(326 B)
📄 atomic_mipsx.s(284 B)
📄 atomic_pointer.go(2.62 KB)
📄 atomic_ppc64x.s(461 B)
📄 atomic_riscv64.s(275 B)
📄 auxv_none.go(360 B)
📄 callers_test.go(7.72 KB)
📁 cgo
📄 cgo.go(2.01 KB)
📄 cgo_mmap.go(2.42 KB)
📄 cgo_ppc64x.go(439 B)
📄 cgo_sigaction.go(3.17 KB)
📄 cgocall.go(18.88 KB)
📄 cgocallback.go(317 B)
📄 cgocheck.go(6.83 KB)
📄 chan.go(23.54 KB)
📄 chan_test.go(23.01 KB)
📄 chanbarrier_test.go(1.4 KB)
📄 checkptr.go(3.29 KB)
📄 checkptr_test.go(1.62 KB)
📄 closure_test.go(937 B)
📄 compiler.go(413 B)
📄 complex.go(1.59 KB)
📄 complex_test.go(1.05 KB)
📄 conv_wasm_test.go(2.96 KB)
📄 cpuflags.go(800 B)
📄 cpuflags_amd64.go(533 B)
📄 cpuflags_arm64.go(334 B)
📄 cpuprof.go(6.92 KB)
📄 cputicks.go(497 B)
📄 crash_cgo_test.go(16.17 KB)
📄 crash_nonunix_test.go(429 B)
📄 crash_test.go(20.96 KB)
📄 crash_unix_test.go(8.52 KB)
📁 debug
📄 debug.go(1.63 KB)
📄 debug_test.go(6.82 KB)
📄 debugcall.go(6.21 KB)
📄 debuglog.go(17.49 KB)
📄 debuglog_off.go(377 B)
📄 debuglog_on.go(1.11 KB)
📄 debuglog_test.go(4.56 KB)
📄 defer_test.go(10.32 KB)
📄 defs1_linux.go(862 B)
📄 defs1_netbsd_386.go(2.84 KB)
📄 defs1_netbsd_amd64.go(3.07 KB)
📄 defs1_netbsd_arm.go(2.96 KB)
📄 defs1_netbsd_arm64.go(3.18 KB)
📄 defs1_solaris_amd64.go(4.02 KB)
📄 defs2_linux.go(3.52 KB)
📄 defs3_linux.go(1.11 KB)
📄 defs_aix.go(4.18 KB)
📄 defs_aix_ppc64.go(3.63 KB)
📄 defs_arm_linux.go(2.69 KB)
📄 defs_darwin.go(3.79 KB)
📄 defs_darwin_amd64.go(6.07 KB)
📄 defs_darwin_arm64.go(3.89 KB)
📄 defs_dragonfly.go(2.63 KB)
📄 defs_dragonfly_amd64.go(3.31 KB)
📄 defs_freebsd.go(3.86 KB)
📄 defs_freebsd_386.go(4.38 KB)
📄 defs_freebsd_amd64.go(4.65 KB)
📄 defs_freebsd_arm.go(3.71 KB)
📄 defs_freebsd_arm64.go(4.03 KB)
📄 defs_illumos_amd64.go(285 B)
📄 defs_linux.go(3.05 KB)
📄 defs_linux_386.go(3.77 KB)
📄 defs_linux_amd64.go(4.28 KB)
📄 defs_linux_arm.go(3.45 KB)
📄 defs_linux_arm64.go(3.21 KB)
📄 defs_linux_mips64x.go(3.24 KB)
📄 defs_linux_mipsx.go(3.21 KB)
📄 defs_linux_ppc64.go(3.28 KB)
📄 defs_linux_ppc64le.go(3.28 KB)
📄 defs_linux_riscv64.go(3.27 KB)
📄 defs_linux_s390x.go(2.76 KB)
📄 defs_netbsd.go(2.76 KB)
📄 defs_netbsd_386.go(872 B)
📄 defs_netbsd_amd64.go(1.03 KB)
📄 defs_netbsd_arm.go(781 B)
📄 defs_openbsd.go(3.1 KB)
📄 defs_openbsd_386.go(2.89 KB)
📄 defs_openbsd_amd64.go(3.09 KB)
📄 defs_openbsd_arm.go(3 KB)
📄 defs_openbsd_arm64.go(2.76 KB)
📄 defs_openbsd_mips64.go(2.66 KB)
📄 defs_plan9_386.go(1.63 KB)
📄 defs_plan9_amd64.go(1.82 KB)
📄 defs_plan9_arm.go(1.73 KB)
📄 defs_solaris.go(3.35 KB)
📄 defs_solaris_amd64.go(1021 B)
📄 defs_windows.go(2.09 KB)
📄 defs_windows_386.go(1.98 KB)
📄 defs_windows_amd64.go(2.71 KB)
📄 defs_windows_arm.go(2.11 KB)
📄 defs_windows_arm64.go(2.63 KB)
📄 duff_386.s(8.24 KB)
📄 duff_amd64.s(5.62 KB)
📄 duff_arm.s(7.11 KB)
📄 duff_arm64.s(5.25 KB)
📄 duff_mips64x.s(11.31 KB)
📄 duff_ppc64x.s(2.43 KB)
📄 duff_riscv64.s(11.38 KB)
📄 duff_s390x.s(507 B)
📄 env_plan9.go(2.99 KB)
📄 env_posix.go(1.95 KB)
📄 env_test.go(1.16 KB)
📄 error.go(9.23 KB)
📄 example_test.go(1.55 KB)
📄 export_aix_test.go(204 B)
📄 export_arm_test.go(226 B)
📄 export_darwin_test.go(351 B)
📄 export_debug_regabiargs_off_test.go(416 B)
📄 export_debug_regabiargs_on_test.go(1.39 KB)
📄 export_debug_test.go(5.86 KB)
📄 export_debuglog_test.go(1.27 KB)
📄 export_futex_test.go(570 B)
📄 export_linux_test.go(429 B)
📄 export_mmap_test.go(571 B)
📄 export_pipe2_test.go(436 B)
📄 export_pipe_test.go(240 B)
📄 export_solaris_test.go(282 B)
📄 export_test.go(30.12 KB)
📄 export_unix_test.go(2.35 KB)
📄 export_windows_test.go(652 B)
📄 extern.go(12.58 KB)
📄 fastlog2.go(1.22 KB)
📄 fastlog2_test.go(784 B)
📄 fastlog2table.go(904 B)
📄 float.go(1.35 KB)
📄 funcdata.h(2.47 KB)
📄 futex_test.go(2.15 KB)
📄 gc_test.go(19.21 KB)
📄 gcinfo_test.go(5.69 KB)
📄 go_tls.h(366 B)
📄 hash32.go(1.61 KB)
📄 hash64.go(2.01 KB)
📄 hash_test.go(16.5 KB)
📄 heapdump.go(17.74 KB)
📄 histogram.go(6.42 KB)
📄 histogram_test.go(1.85 KB)
📄 iface.go(16.13 KB)
📄 iface_test.go(7.51 KB)
📁 internal
📄 lfstack.go(1.77 KB)
📄 lfstack_32bit.go(562 B)
📄 lfstack_64bit.go(2.24 KB)
📄 lfstack_test.go(2.78 KB)
📄 libfuzzer.go(2.6 KB)
📄 libfuzzer_amd64.s(961 B)
📄 libfuzzer_arm64.s(772 B)
📄 lock_futex.go(5.22 KB)
📄 lock_js.go(5.81 KB)
📄 lock_sema.go(6.8 KB)
📄 lockrank.go(11.62 KB)
📄 lockrank_off.go(1.17 KB)
📄 lockrank_on.go(9.84 KB)
📄 lockrank_test.go(1.15 KB)
📄 malloc.go(52.33 KB)
📄 malloc_test.go(10.83 KB)
📄 map.go(42.47 KB)
📄 map_benchmark_test.go(10.51 KB)
📄 map_fast32.go(12.63 KB)
📄 map_fast64.go(12.82 KB)
📄 map_faststr.go(14.15 KB)
📄 map_test.go(27.52 KB)
📄 mbarrier.go(12.2 KB)
📄 mbitmap.go(65.27 KB)
📄 mcache.go(9.68 KB)
📄 mcentral.go(7.8 KB)
📄 mcheckmark.go(2.81 KB)
📄 mem_aix.go(1.94 KB)
📄 mem_bsd.go(2.12 KB)
📄 mem_darwin.go(1.88 KB)
📄 mem_js.go(2.35 KB)
📄 mem_linux.go(5.59 KB)
📄 mem_plan9.go(4.53 KB)
📄 mem_windows.go(3.87 KB)
📄 memclr_386.s(2.42 KB)
📄 memclr_amd64.s(3.89 KB)
📄 memclr_arm.s(2.6 KB)
📄 memclr_arm64.s(3.65 KB)
📄 memclr_mips64x.s(1.75 KB)
📄 memclr_mipsx.s(1.35 KB)
📄 memclr_plan9_386.s(983 B)
📄 memclr_plan9_amd64.s(511 B)
📄 memclr_ppc64x.s(4.31 KB)
📄 memclr_riscv64.s(926 B)
📄 memclr_s390x.s(1.96 KB)
📄 memclr_wasm.s(622 B)
📄 memmove_386.s(4.46 KB)
📄 memmove_amd64.s(12.66 KB)
📄 memmove_arm.s(5.9 KB)
📄 memmove_arm64.s(6 KB)
📄 memmove_linux_amd64_test.go(1.6 KB)
📄 memmove_mips64x.s(1.85 KB)
📄 memmove_mipsx.s(4.42 KB)
📄 memmove_plan9_386.s(3.06 KB)
📄 memmove_plan9_amd64.s(3.04 KB)
📄 memmove_ppc64x.s(4.11 KB)
📄 memmove_riscv64.s(1.81 KB)
📄 memmove_s390x.s(2.92 KB)
📄 memmove_test.go(12.04 KB)
📄 memmove_wasm.s(1.74 KB)
📁 metrics
📄 metrics.go(17.69 KB)
📄 metrics_test.go(12.48 KB)
📄 mfinal.go(15.76 KB)
📄 mfinal_test.go(5.85 KB)
📄 mfixalloc.go(2.73 KB)
📄 mgc.go(55.18 KB)
📄 mgcmark.go(45.54 KB)
📄 mgcpacer.go(29.56 KB)
📄 mgcscavenge.go(35.05 KB)
📄 mgcscavenge_test.go(12.74 KB)
📄 mgcstack.go(10.58 KB)
📄 mgcsweep.go(23.56 KB)
📄 mgcwork.go(12.82 KB)
📄 mheap.go(66.31 KB)
📄 mkduff.go(7.19 KB)
📄 mkfastlog2table.go(1.32 KB)
📄 mkpreempt.go(14.17 KB)
📄 mksizeclasses.go(9.31 KB)
📄 mmap.go(990 B)
📄 mpagealloc.go(36.77 KB)
📄 mpagealloc_32bit.go(3.81 KB)
📄 mpagealloc_64bit.go(6.65 KB)
📄 mpagealloc_test.go(32.38 KB)
📄 mpagecache.go(5.28 KB)
📄 mpagecache_test.go(9.93 KB)
📄 mpallocbits.go(12.01 KB)
📄 mpallocbits_test.go(13.69 KB)
📄 mprof.go(25.82 KB)
📄 mranges.go(11.84 KB)
📄 mranges_test.go(5.68 KB)
📁 msan
📄 msan.go(1.51 KB)
📄 msan0.go(741 B)
📄 msan_amd64.s(2.32 KB)
📄 msan_arm64.s(2.01 KB)
📄 msize.go(777 B)
📄 mspanset.go(12.2 KB)
📄 mstats.go(30.65 KB)
📄 mwbbuf.go(9.3 KB)
📄 nbpipe_fcntl_libc_test.go(499 B)
📄 nbpipe_fcntl_unix_test.go(507 B)
📄 nbpipe_pipe.go(426 B)
📄 nbpipe_pipe2.go(592 B)
📄 nbpipe_test.go(2.26 KB)
📄 net_plan9.go(645 B)
📄 netpoll.go(16.24 KB)
📄 netpoll_aix.go(4.87 KB)
📄 netpoll_epoll.go(4.21 KB)
📄 netpoll_fake.go(670 B)
📄 netpoll_kqueue.go(4.64 KB)
📄 netpoll_os_test.go(360 B)
📄 netpoll_solaris.go(10.75 KB)
📄 netpoll_stub.go(1.42 KB)
📄 netpoll_windows.go(3.75 KB)
📄 norace_linux_test.go(905 B)
📄 norace_test.go(996 B)
📄 numcpu_freebsd_test.go(381 B)
📄 os2_aix.go(20.45 KB)
📄 os2_freebsd.go(302 B)
📄 os2_openbsd.go(296 B)
📄 os2_plan9.go(1.48 KB)
📄 os2_solaris.go(320 B)
📄 os3_plan9.go(3.88 KB)
📄 os3_solaris.go(17.02 KB)
📄 os_aix.go(8.06 KB)
📄 os_android.go(463 B)
📄 os_darwin.go(11.54 KB)
📄 os_darwin_arm64.go(416 B)
📄 os_dragonfly.go(6.46 KB)
📄 os_freebsd.go(11.2 KB)
📄 os_freebsd2.go(507 B)
📄 os_freebsd_amd64.go(529 B)
📄 os_freebsd_arm.go(1.32 KB)
📄 os_freebsd_arm64.go(398 B)
📄 os_freebsd_noauxv.go(264 B)
📄 os_illumos.go(3.93 KB)
📄 os_js.go(3.26 KB)
📄 os_linux.go(13.47 KB)
📄 os_linux_arm.go(1.35 KB)
📄 os_linux_arm64.go(572 B)
📄 os_linux_be64.go(862 B)
📄 os_linux_generic.go(950 B)
📄 os_linux_mips64x.go(1.11 KB)
📄 os_linux_mipsx.go(1.09 KB)
📄 os_linux_noauxv.go(408 B)
📄 os_linux_novdso.go(387 B)
📄 os_linux_ppc64x.go(566 B)
📄 os_linux_riscv64.go(198 B)
📄 os_linux_s390x.go(316 B)
📄 os_linux_x86.go(270 B)
📄 os_netbsd.go(9.09 KB)
📄 os_netbsd_386.go(588 B)
📄 os_netbsd_amd64.go(585 B)
📄 os_netbsd_arm.go(1.13 KB)
📄 os_netbsd_arm64.go(827 B)
📄 os_nonopenbsd.go(456 B)
📄 os_only_solaris.go(376 B)
📄 os_openbsd.go(6.01 KB)
📄 os_openbsd_arm.go(749 B)
📄 os_openbsd_arm64.go(416 B)
📄 os_openbsd_libc.go(1.7 KB)
📄 os_openbsd_mips64.go(416 B)
📄 os_openbsd_syscall.go(1.27 KB)
📄 os_openbsd_syscall1.go(466 B)
📄 os_openbsd_syscall2.go(2.5 KB)
📄 os_plan9.go(10.2 KB)
📄 os_plan9_arm.go(462 B)
📄 os_solaris.go(6.49 KB)
📄 os_windows.go(43.68 KB)
📄 os_windows_arm.go(511 B)
📄 os_windows_arm64.go(339 B)
📄 panic.go(44.28 KB)
📄 panic32.go(4.83 KB)
📄 panic_test.go(1.71 KB)
📄 plugin.go(4.27 KB)
📁 pprof
📄 preempt.go(15.4 KB)
📄 preempt_386.s(1.07 KB)
📄 preempt_amd64.s(1.81 KB)
📄 preempt_arm.s(1.66 KB)
📄 preempt_arm64.s(2.99 KB)
📄 preempt_mips64x.s(2.93 KB)
📄 preempt_mipsx.s(2.89 KB)
📄 preempt_nonwindows.go(309 B)
📄 preempt_ppc64x.s(2.92 KB)
📄 preempt_riscv64.s(2.48 KB)
📄 preempt_s390x.s(1.19 KB)
📄 preempt_wasm.s(365 B)
📄 print.go(5.95 KB)
📄 proc.go(181.46 KB)
📄 proc_runtime_test.go(820 B)
📄 proc_test.go(25.02 KB)
📄 profbuf.go(18.26 KB)
📄 profbuf_test.go(8.65 KB)
📄 proflabel.go(1.52 KB)
📁 race
📄 race.go(18.56 KB)
📄 race0.go(2.81 KB)
📄 race_amd64.s(14.46 KB)
📄 race_arm64.s(13.71 KB)
📄 race_ppc64le.s(17.72 KB)
📄 rand_test.go(783 B)
📄 rdebug.go(553 B)
📄 relax_stub.go(617 B)
📄 rt0_aix_ppc64.s(4.33 KB)
📄 rt0_android_386.s(822 B)
📄 rt0_android_amd64.s(754 B)
📄 rt0_android_arm.s(843 B)
📄 rt0_android_arm64.s(941 B)
📄 rt0_darwin_amd64.s(399 B)
📄 rt0_darwin_arm64.s(2.27 KB)
📄 rt0_dragonfly_amd64.s(448 B)
📄 rt0_freebsd_386.s(454 B)
📄 rt0_freebsd_amd64.s(442 B)
📄 rt0_freebsd_arm.s(298 B)
📄 rt0_freebsd_arm64.s(2.46 KB)
📄 rt0_illumos_amd64.s(311 B)
📄 rt0_ios_amd64.s(425 B)
📄 rt0_ios_arm64.s(425 B)
📄 rt0_js_wasm.s(2.3 KB)
📄 rt0_linux_386.s(450 B)
📄 rt0_linux_amd64.s(307 B)
📄 rt0_linux_arm.s(1007 B)
📄 rt0_linux_arm64.s(2.39 KB)
📄 rt0_linux_mips64x.s(1.03 KB)
📄 rt0_linux_mipsx.s(835 B)
📄 rt0_linux_ppc64.s(865 B)
📄 rt0_linux_ppc64le.s(3.88 KB)
📄 rt0_linux_riscv64.s(370 B)
📄 rt0_linux_s390x.s(676 B)
📄 rt0_netbsd_386.s(452 B)
📄 rt0_netbsd_amd64.s(309 B)
📄 rt0_netbsd_arm.s(296 B)
📄 rt0_netbsd_arm64.s(2.38 KB)
📄 rt0_openbsd_386.s(454 B)
📄 rt0_openbsd_amd64.s(311 B)
📄 rt0_openbsd_arm.s(298 B)
📄 rt0_openbsd_arm64.s(2.54 KB)
📄 rt0_openbsd_mips64.s(976 B)
📄 rt0_plan9_386.s(523 B)
📄 rt0_plan9_amd64.s(481 B)
📄 rt0_plan9_arm.s(397 B)
📄 rt0_solaris_amd64.s(311 B)
📄 rt0_windows_386.s(1.28 KB)
📄 rt0_windows_amd64.s(986 B)
📄 rt0_windows_arm.s(386 B)
📄 rt0_windows_arm64.s(725 B)
📄 runtime-gdb.py(15.02 KB)
📄 runtime-gdb_test.go(20.19 KB)
📄 runtime-lldb_test.go(4.95 KB)
📄 runtime.go(1.42 KB)
📄 runtime1.go(12.63 KB)
📄 runtime2.go(42.27 KB)
📄 runtime_linux_test.go(1.46 KB)
📄 runtime_mmap_test.go(1.91 KB)
📄 runtime_test.go(7.81 KB)
📄 runtime_unix_test.go(1.29 KB)
📄 rwmutex.go(3.53 KB)
📄 rwmutex_test.go(4.03 KB)
📄 select.go(14.45 KB)
📄 sema.go(16.08 KB)
📄 sema_test.go(2.5 KB)
📄 semasleep_test.go(1.65 KB)
📄 sigaction.go(543 B)
📄 signal_386.go(1.72 KB)
📄 signal_aix_ppc64.go(3.56 KB)
📄 signal_amd64.go(2.71 KB)
📄 signal_arm.go(2.56 KB)
📄 signal_arm64.go(3.16 KB)
📄 signal_darwin.go(2.13 KB)
📄 signal_darwin_amd64.go(3.85 KB)
📄 signal_darwin_arm64.go(3.6 KB)
📄 signal_dragonfly.go(2.17 KB)
📄 signal_dragonfly_amd64.go(2.01 KB)
📄 signal_freebsd.go(2.2 KB)
📄 signal_freebsd_386.go(1.55 KB)
📄 signal_freebsd_amd64.go(2.03 KB)
📄 signal_freebsd_arm.go(2.18 KB)
📄 signal_freebsd_arm64.go(3.23 KB)
📄 signal_linux_386.go(1.59 KB)
📄 signal_linux_amd64.go(2.05 KB)
📄 signal_linux_arm.go(2.13 KB)
📄 signal_linux_arm64.go(2.95 KB)
📄 signal_linux_mips64x.go(3.39 KB)
📄 signal_linux_mipsx.go(3.7 KB)
📄 signal_linux_ppc64x.go(3.46 KB)
📄 signal_linux_riscv64.go(2.92 KB)
📄 signal_linux_s390x.go(4.43 KB)
📄 signal_mips64x.go(3.2 KB)
📄 signal_mipsx.go(3.07 KB)
📄 signal_netbsd.go(2.18 KB)
📄 signal_netbsd_386.go(1.76 KB)
📄 signal_netbsd_amd64.go(2.33 KB)
📄 signal_netbsd_arm.go(2.3 KB)
📄 signal_netbsd_arm64.go(3.4 KB)
📄 signal_openbsd.go(2.18 KB)
📄 signal_openbsd_386.go(1.58 KB)
📄 signal_openbsd_amd64.go(2.04 KB)
📄 signal_openbsd_arm.go(2.12 KB)
📄 signal_openbsd_arm64.go(3.38 KB)
📄 signal_openbsd_mips64.go(3.28 KB)
📄 signal_plan9.go(1.93 KB)
📄 signal_ppc64x.go(3.64 KB)
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📄 sys_linux_s390x.s(10.52 KB)
📄 sys_mips64x.go(526 B)
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📄 sys_openbsd_386.s(19.97 KB)
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📄 sys_windows_amd64.s(9.16 KB)
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📁 testdata
📄 textflag.h(1.52 KB)
📄 time.go(30.56 KB)
📄 time_fake.go(2.38 KB)
📄 time_linux_amd64.s(2.18 KB)
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📄 time_windows.h(694 B)
📄 time_windows_386.s(1.81 KB)
📄 time_windows_amd64.s(1.07 KB)
📄 time_windows_arm.s(2.07 KB)
📄 time_windows_arm64.s(1.33 KB)
📄 timeasm.go(468 B)
📄 timestub.go(595 B)
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📄 tls_arm.s(3.33 KB)
📄 tls_arm64.h(1.22 KB)
📄 tls_arm64.s(1.2 KB)
📄 tls_mips64x.s(759 B)
📄 tls_mipsx.s(731 B)
📄 tls_ppc64x.s(1.52 KB)
📄 tls_riscv64.s(726 B)
📄 tls_s390x.s(1.55 KB)
📄 tls_stub.go(294 B)
📄 tls_windows_amd64.go(294 B)
📁 trace
📄 trace.go(38.36 KB)
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📄 type.go(18.59 KB)
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📄 utf8.go(3.39 KB)
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📄 vdso_freebsd.go(2.46 KB)
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📄 vdso_freebsd_x86.go(1.89 KB)
📄 vdso_in_none.go(490 B)
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📄 vdso_linux_386.go(669 B)
📄 vdso_linux_amd64.go(685 B)
📄 vdso_linux_arm.go(669 B)
📄 vdso_linux_arm64.go(670 B)
📄 vdso_linux_mips64x.go(892 B)
📄 vdso_linux_ppc64x.go(712 B)
📄 vlop_386.s(2.02 KB)
📄 vlop_arm.s(7.06 KB)
📄 vlop_arm_test.go(3.75 KB)
📄 vlrt.go(5.91 KB)
📄 wincallback.go(3.52 KB)
📄 write_err.go(310 B)
📄 write_err_android.go(4.65 KB)
📄 zcallback_windows.go(155 B)
📄 zcallback_windows.s(63.05 KB)
📄 zcallback_windows_arm.s(89.34 KB)
📄 zcallback_windows_arm64.s(89.34 KB)

Editing: malloc_test.go

// Copyright 2013 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.

package runtime_test

import (
	"flag"
	"fmt"
	"internal/race"
	"internal/testenv"
	"os"
	"os/exec"
	"reflect"
	"runtime"
	. "runtime"
	"strings"
	"sync/atomic"
	"testing"
	"time"
	"unsafe"
)

var testMemStatsCount int

func TestMemStats(t *testing.T) {
	testMemStatsCount++

// Make sure there's at least one forced GC.
	GC()

// Test that MemStats has sane values.
	st := new(MemStats)
	ReadMemStats(st)

nz := func(x interface{}) error {
		if x != reflect.Zero(reflect.TypeOf(x)).Interface() {
			return nil
		}
		return fmt.Errorf("zero value")
	}
	le := func(thresh float64) func(interface{}) error {
		return func(x interface{}) error {
			// These sanity tests aren't necessarily valid
			// with high -test.count values, so only run
			// them once.
			if testMemStatsCount > 1 {
				return nil
			}

if reflect.ValueOf(x).Convert(reflect.TypeOf(thresh)).Float() < thresh {
				return nil
			}
			return fmt.Errorf("insanely high value (overflow?); want <= %v", thresh)
		}
	}
	eq := func(x interface{}) func(interface{}) error {
		return func(y interface{}) error {
			if x == y {
				return nil
			}
			return fmt.Errorf("want %v", x)
		}
	}
	// Of the uint fields, HeapReleased, HeapIdle can be 0.
	// PauseTotalNs can be 0 if timer resolution is poor.
	fields := map[string][]func(interface{}) error{
		"Alloc": {nz, le(1e10)}, "TotalAlloc": {nz, le(1e11)}, "Sys": {nz, le(1e10)},
		"Lookups": {eq(uint64(0))}, "Mallocs": {nz, le(1e10)}, "Frees": {nz, le(1e10)},
		"HeapAlloc": {nz, le(1e10)}, "HeapSys": {nz, le(1e10)}, "HeapIdle": {le(1e10)},
		"HeapInuse": {nz, le(1e10)}, "HeapReleased": {le(1e10)}, "HeapObjects": {nz, le(1e10)},
		"StackInuse": {nz, le(1e10)}, "StackSys": {nz, le(1e10)},
		"MSpanInuse": {nz, le(1e10)}, "MSpanSys": {nz, le(1e10)},
		"MCacheInuse": {nz, le(1e10)}, "MCacheSys": {nz, le(1e10)},
		"BuckHashSys": {nz, le(1e10)}, "GCSys": {nz, le(1e10)}, "OtherSys": {nz, le(1e10)},
		"NextGC": {nz, le(1e10)}, "LastGC": {nz},
		"PauseTotalNs": {le(1e11)}, "PauseNs": nil, "PauseEnd": nil,
		"NumGC": {nz, le(1e9)}, "NumForcedGC": {nz, le(1e9)},
		"GCCPUFraction": {le(0.99)}, "EnableGC": {eq(true)}, "DebugGC": {eq(false)},
		"BySize": nil,
	}

rst := reflect.ValueOf(st).Elem()
	for i := 0; i < rst.Type().NumField(); i++ {
		name, val := rst.Type().Field(i).Name, rst.Field(i).Interface()
		checks, ok := fields[name]
		if !ok {
			t.Errorf("unknown MemStats field %s", name)
			continue
		}
		for _, check := range checks {
			if err := check(val); err != nil {
				t.Errorf("%s = %v: %s", name, val, err)
			}
		}
	}

if st.Sys != st.HeapSys+st.StackSys+st.MSpanSys+st.MCacheSys+
		st.BuckHashSys+st.GCSys+st.OtherSys {
		t.Fatalf("Bad sys value: %+v", *st)
	}

if st.HeapIdle+st.HeapInuse != st.HeapSys {
		t.Fatalf("HeapIdle(%d) + HeapInuse(%d) should be equal to HeapSys(%d), but isn't.", st.HeapIdle, st.HeapInuse, st.HeapSys)
	}

if lpe := st.PauseEnd[int(st.NumGC+255)%len(st.PauseEnd)]; st.LastGC != lpe {
		t.Fatalf("LastGC(%d) != last PauseEnd(%d)", st.LastGC, lpe)
	}

var pauseTotal uint64
	for _, pause := range st.PauseNs {
		pauseTotal += pause
	}
	if int(st.NumGC) < len(st.PauseNs) {
		// We have all pauses, so this should be exact.
		if st.PauseTotalNs != pauseTotal {
			t.Fatalf("PauseTotalNs(%d) != sum PauseNs(%d)", st.PauseTotalNs, pauseTotal)
		}
		for i := int(st.NumGC); i < len(st.PauseNs); i++ {
			if st.PauseNs[i] != 0 {
				t.Fatalf("Non-zero PauseNs[%d]: %+v", i, st)
			}
			if st.PauseEnd[i] != 0 {
				t.Fatalf("Non-zero PauseEnd[%d]: %+v", i, st)
			}
		}
	} else {
		if st.PauseTotalNs < pauseTotal {
			t.Fatalf("PauseTotalNs(%d) < sum PauseNs(%d)", st.PauseTotalNs, pauseTotal)
		}
	}

if st.NumForcedGC > st.NumGC {
		t.Fatalf("NumForcedGC(%d) > NumGC(%d)", st.NumForcedGC, st.NumGC)
	}
}

func TestStringConcatenationAllocs(t *testing.T) {
	n := testing.AllocsPerRun(1e3, func() {
		b := make([]byte, 10)
		for i := 0; i < 10; i++ {
			b[i] = byte(i) + '0'
		}
		s := "foo" + string(b)
		if want := "foo0123456789"; s != want {
			t.Fatalf("want %v, got %v", want, s)
		}
	})
	// Only string concatenation allocates.
	if n != 1 {
		t.Fatalf("want 1 allocation, got %v", n)
	}
}

func TestTinyAlloc(t *testing.T) {
	if runtime.Raceenabled {
		t.Skip("tinyalloc suppressed when running in race mode")
	}
	const N = 16
	var v [N]unsafe.Pointer
	for i := range v {
		v[i] = unsafe.Pointer(new(byte))
	}

chunks := make(map[uintptr]bool, N)
	for _, p := range v {
		chunks[uintptr(p)&^7] = true
	}

if len(chunks) == N {
		t.Fatal("no bytes allocated within the same 8-byte chunk")
	}
}

var (
	tinyByteSink   *byte
	tinyUint32Sink *uint32
	tinyObj12Sink  *obj12
)

type obj12 struct {
	a uint64
	b uint32
}

func TestTinyAllocIssue37262(t *testing.T) {
	if runtime.Raceenabled {
		t.Skip("tinyalloc suppressed when running in race mode")
	}
	// Try to cause an alignment access fault
	// by atomically accessing the first 64-bit
	// value of a tiny-allocated object.
	// See issue 37262 for details.

// GC twice, once to reach a stable heap state
	// and again to make sure we finish the sweep phase.
	runtime.GC()
	runtime.GC()

// Make 1-byte allocations until we get a fresh tiny slot.
	aligned := false
	for i := 0; i < 16; i++ {
		tinyByteSink = new(byte)
		if uintptr(unsafe.Pointer(tinyByteSink))&0xf == 0xf {
			aligned = true
			break
		}
	}
	if !aligned {
		t.Fatal("unable to get a fresh tiny slot")
	}

// Create a 4-byte object so that the current
	// tiny slot is partially filled.
	tinyUint32Sink = new(uint32)

// Create a 12-byte object, which fits into the
	// tiny slot. If it actually gets place there,
	// then the field "a" will be improperly aligned
	// for atomic access on 32-bit architectures.
	// This won't be true if issue 36606 gets resolved.
	tinyObj12Sink = new(obj12)

// Try to atomically access "x.a".
	atomic.StoreUint64(&tinyObj12Sink.a, 10)

// Clear the sinks.
	tinyByteSink = nil
	tinyUint32Sink = nil
	tinyObj12Sink = nil
}

func TestPageCacheLeak(t *testing.T) {
	defer GOMAXPROCS(GOMAXPROCS(1))
	leaked := PageCachePagesLeaked()
	if leaked != 0 {
		t.Fatalf("found %d leaked pages in page caches", leaked)
	}
}

func TestPhysicalMemoryUtilization(t *testing.T) {
	got := runTestProg(t, "testprog", "GCPhys")
	want := "OK\n"
	if got != want {
		t.Fatalf("expected %q, but got %q", want, got)
	}
}

func TestScavengedBitsCleared(t *testing.T) {
	var mismatches [128]BitsMismatch
	if n, ok := CheckScavengedBitsCleared(mismatches[:]); !ok {
		t.Errorf("uncleared scavenged bits")
		for _, m := range mismatches[:n] {
			t.Logf("\t@ address 0x%x", m.Base)
			t.Logf("\t|  got: %064b", m.Got)
			t.Logf("\t| want: %064b", m.Want)
		}
		t.FailNow()
	}
}

type acLink struct {
	x [1 << 20]byte
}

var arenaCollisionSink []*acLink

func TestArenaCollision(t *testing.T) {
	testenv.MustHaveExec(t)

// Test that mheap.sysAlloc handles collisions with other
	// memory mappings.
	if os.Getenv("TEST_ARENA_COLLISION") != "1" {
		cmd := testenv.CleanCmdEnv(exec.Command(os.Args[0], "-test.run=TestArenaCollision", "-test.v"))
		cmd.Env = append(cmd.Env, "TEST_ARENA_COLLISION=1")
		out, err := cmd.CombinedOutput()
		if race.Enabled {
			// This test runs the runtime out of hint
			// addresses, so it will start mapping the
			// heap wherever it can. The race detector
			// doesn't support this, so look for the
			// expected failure.
			if want := "too many address space collisions"; !strings.Contains(string(out), want) {
				t.Fatalf("want %q, got:\n%s", want, string(out))
			}
		} else if !strings.Contains(string(out), "PASS\n") || err != nil {
			t.Fatalf("%s\n(exit status %v)", string(out), err)
		}
		return
	}
	disallowed := [][2]uintptr{}
	// Drop all but the next 3 hints. 64-bit has a lot of hints,
	// so it would take a lot of memory to go through all of them.
	KeepNArenaHints(3)
	// Consume these 3 hints and force the runtime to find some
	// fallback hints.
	for i := 0; i < 5; i++ {
		// Reserve memory at the next hint so it can't be used
		// for the heap.
		start, end := MapNextArenaHint()
		disallowed = append(disallowed, [2]uintptr{start, end})
		// Allocate until the runtime tries to use the hint we
		// just mapped over.
		hint := GetNextArenaHint()
		for GetNextArenaHint() == hint {
			ac := new(acLink)
			arenaCollisionSink = append(arenaCollisionSink, ac)
			// The allocation must not have fallen into
			// one of the reserved regions.
			p := uintptr(unsafe.Pointer(ac))
			for _, d := range disallowed {
				if d[0] <= p && p < d[1] {
					t.Fatalf("allocation %#x in reserved region [%#x, %#x)", p, d[0], d[1])
				}
			}
		}
	}
}

var mallocSink uintptr

func BenchmarkMalloc8(b *testing.B) {
	var x uintptr
	for i := 0; i < b.N; i++ {
		p := new(int64)
		x ^= uintptr(unsafe.Pointer(p))
	}
	mallocSink = x
}

func BenchmarkMalloc16(b *testing.B) {
	var x uintptr
	for i := 0; i < b.N; i++ {
		p := new([2]int64)
		x ^= uintptr(unsafe.Pointer(p))
	}
	mallocSink = x
}

func BenchmarkMallocTypeInfo8(b *testing.B) {
	var x uintptr
	for i := 0; i < b.N; i++ {
		p := new(struct {
			p [8 / unsafe.Sizeof(uintptr(0))]*int
		})
		x ^= uintptr(unsafe.Pointer(p))
	}
	mallocSink = x
}

func BenchmarkMallocTypeInfo16(b *testing.B) {
	var x uintptr
	for i := 0; i < b.N; i++ {
		p := new(struct {
			p [16 / unsafe.Sizeof(uintptr(0))]*int
		})
		x ^= uintptr(unsafe.Pointer(p))
	}
	mallocSink = x
}

type LargeStruct struct {
	x [16][]byte
}

func BenchmarkMallocLargeStruct(b *testing.B) {
	var x uintptr
	for i := 0; i < b.N; i++ {
		p := make([]LargeStruct, 2)
		x ^= uintptr(unsafe.Pointer(&p[0]))
	}
	mallocSink = x
}

var n = flag.Int("n", 1000, "number of goroutines")

func BenchmarkGoroutineSelect(b *testing.B) {
	quit := make(chan struct{})
	read := func(ch chan struct{}) {
		for {
			select {
			case _, ok := <-ch:
				if !ok {
					return
				}
			case <-quit:
				return
			}
		}
	}
	benchHelper(b, *n, read)
}

func BenchmarkGoroutineBlocking(b *testing.B) {
	read := func(ch chan struct{}) {
		for {
			if _, ok := <-ch; !ok {
				return
			}
		}
	}
	benchHelper(b, *n, read)
}

func BenchmarkGoroutineForRange(b *testing.B) {
	read := func(ch chan struct{}) {
		for range ch {
		}
	}
	benchHelper(b, *n, read)
}

func benchHelper(b *testing.B, n int, read func(chan struct{})) {
	m := make([]chan struct{}, n)
	for i := range m {
		m[i] = make(chan struct{}, 1)
		go read(m[i])
	}
	b.StopTimer()
	b.ResetTimer()
	GC()

for i := 0; i < b.N; i++ {
		for _, ch := range m {
			if ch != nil {
				ch <- struct{}{}
			}
		}
		time.Sleep(10 * time.Millisecond)
		b.StartTimer()
		GC()
		b.StopTimer()
	}

for _, ch := range m {
		close(ch)
	}
	time.Sleep(10 * time.Millisecond)
}

func BenchmarkGoroutineIdle(b *testing.B) {
	quit := make(chan struct{})
	fn := func() {
		<-quit
	}
	for i := 0; i < *n; i++ {
		go fn()
	}

GC()
	b.ResetTimer()

for i := 0; i < b.N; i++ {
		GC()
	}

b.StopTimer()
	close(quit)
	time.Sleep(10 * time.Millisecond)
}

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