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author | Rhys Hiltner <rhys@justin.tv> | 2021-09-23 16:46:58 -0700 |
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committer | Michael Pratt <mpratt@google.com> | 2021-09-27 18:58:36 +0000 |
commit | 5b909580849c611c633c111a15adb40c9c42ec8e (patch) | |
tree | 5573e638e932b7bcb6f8fa6e3117d36ce0fc0d74 /src/runtime/proc.go | |
parent | 8cfd8c3db8e32fed0cf61371335d87a47a4738c3 (diff) | |
download | go-5b909580849c611c633c111a15adb40c9c42ec8e.tar.gz go-5b909580849c611c633c111a15adb40c9c42ec8e.zip |
runtime: move sigprofNonGo
The sigprofNonGo and sigprofNonGoPC functions are only used on unix-like
platforms. In preparation for unix-specific changes to sigprofNonGo,
move it (plus its close relative) to a unix-specific file.
Updates #35057
Change-Id: I9c814127c58612ea9a9fbd28a992b04ace5c604d
Reviewed-on: https://go-review.googlesource.com/c/go/+/351790
Run-TryBot: Rhys Hiltner <rhys@justin.tv>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
Trust: David Chase <drchase@google.com>
Diffstat (limited to 'src/runtime/proc.go')
-rw-r--r-- | src/runtime/proc.go | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/src/runtime/proc.go b/src/runtime/proc.go index b744d0e71e..2f619f93d3 100644 --- a/src/runtime/proc.go +++ b/src/runtime/proc.go @@ -4705,45 +4705,6 @@ func sigprof(pc, sp, lr uintptr, gp *g, mp *m) { getg().m.mallocing-- } -// If the signal handler receives a SIGPROF signal on a non-Go thread, -// it tries to collect a traceback into sigprofCallers. -// sigprofCallersUse is set to non-zero while sigprofCallers holds a traceback. -var sigprofCallers cgoCallers -var sigprofCallersUse uint32 - -// sigprofNonGo is called if we receive a SIGPROF signal on a non-Go thread, -// and the signal handler collected a stack trace in sigprofCallers. -// When this is called, sigprofCallersUse will be non-zero. -// g is nil, and what we can do is very limited. -//go:nosplit -//go:nowritebarrierrec -func sigprofNonGo() { - if prof.hz != 0 { - n := 0 - for n < len(sigprofCallers) && sigprofCallers[n] != 0 { - n++ - } - cpuprof.addNonGo(sigprofCallers[:n]) - } - - atomic.Store(&sigprofCallersUse, 0) -} - -// sigprofNonGoPC is called when a profiling signal arrived on a -// non-Go thread and we have a single PC value, not a stack trace. -// g is nil, and what we can do is very limited. -//go:nosplit -//go:nowritebarrierrec -func sigprofNonGoPC(pc uintptr) { - if prof.hz != 0 { - stk := []uintptr{ - pc, - abi.FuncPCABIInternal(_ExternalCode) + sys.PCQuantum, - } - cpuprof.addNonGo(stk) - } -} - // setcpuprofilerate sets the CPU profiling rate to hz times per second. // If hz <= 0, setcpuprofilerate turns off CPU profiling. func setcpuprofilerate(hz int32) { |