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feat: add env option SONIC_STOP_PROFILING to stop traceback on demands (#361)

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Yi Duan 2023-02-14 14:48:22 +08:00 committed by GitHub
parent 02865de676
commit fa82a64ce2
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2 changed files with 10 additions and 0 deletions
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4
internal/rt/asm_amd64.s
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@ -22,6 +22,8 @@ _stack_grow:
TEXT ·StopProf(SB), NOSPLIT, $0-0 TEXT ·StopProf(SB), NOSPLIT, $0-0
NO_LOCAL_POINTERS NO_LOCAL_POINTERS
CMPB github·com∕bytedance∕sonic∕internal∕rt·StopProfiling(SB), $0
JEQ _ret_1
MOVL $1, AX MOVL $1, AX
LEAQ github·com∕bytedance∕sonic∕internal∕rt·yieldCount(SB), CX LEAQ github·com∕bytedance∕sonic∕internal∕rt·yieldCount(SB), CX
LOCK LOCK
@ -37,6 +39,8 @@ _ret_1:
TEXT ·StartProf(SB), NOSPLIT, $0-0 TEXT ·StartProf(SB), NOSPLIT, $0-0
NO_LOCAL_POINTERS NO_LOCAL_POINTERS
CMPB github·com∕bytedance∕sonic∕internal∕rt·StopProfiling(SB), $0
JEQ _ret_2
MOVL $-1, AX MOVL $-1, AX
LEAQ github·com∕bytedance∕sonic∕internal∕rt·yieldCount(SB), CX LEAQ github·com∕bytedance∕sonic∕internal∕rt·yieldCount(SB), CX
LOCK LOCK

6
internal/rt/gcwb.go
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@ -17,6 +17,7 @@
package rt package rt
import ( import (
`os`
`sync/atomic` `sync/atomic`
`unsafe` `unsafe`
@ -75,6 +76,11 @@ func GcwbAddr() uintptr {
} }
} }
// StopProfiling is used to stop traceback introduced by SIGPROF while native code is running.
// WARN: this option is only a workaround for traceback issue (https://github.com/bytedance/sonic/issues/310),
// and will be dropped when the issue is fixed.
var StopProfiling = os.Getenv("SONIC_STOP_PROFILING") != ""
// WARN: must be aligned with runtime.Prof // WARN: must be aligned with runtime.Prof
// type Prof struct { // type Prof struct {
// signalLock uint32 // signalLock uint32