mirror of
https://github.com/golang/go
synced 2024-11-23 19:50:06 -07:00
runtime: merge race1.go -> race.go
* append contents of race1.go to race.go * delete "Implementation of the race detector API." comment from race1.go Updates #12952 Change-Id: Ibdd9c4dc79a63c3bef69eade9525578063c86c1c Reviewed-on: https://go-review.googlesource.com/16023 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Nodir Turakulov
Brad Fitzpatrick
parent
6deb3c0619
commit
243757576d
@ -90,3 +90,308 @@ func racesymbolize(ctx *symbolizeContext) {
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ctx.res = 1
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return
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}
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// Race runtime functions called via runtime·racecall.
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//go:linkname __tsan_init __tsan_init
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var __tsan_init byte
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//go:linkname __tsan_fini __tsan_fini
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var __tsan_fini byte
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//go:linkname __tsan_map_shadow __tsan_map_shadow
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var __tsan_map_shadow byte
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//go:linkname __tsan_finalizer_goroutine __tsan_finalizer_goroutine
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var __tsan_finalizer_goroutine byte
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//go:linkname __tsan_go_start __tsan_go_start
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var __tsan_go_start byte
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//go:linkname __tsan_go_end __tsan_go_end
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var __tsan_go_end byte
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//go:linkname __tsan_malloc __tsan_malloc
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var __tsan_malloc byte
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//go:linkname __tsan_acquire __tsan_acquire
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var __tsan_acquire byte
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//go:linkname __tsan_release __tsan_release
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var __tsan_release byte
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//go:linkname __tsan_release_merge __tsan_release_merge
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var __tsan_release_merge byte
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//go:linkname __tsan_go_ignore_sync_begin __tsan_go_ignore_sync_begin
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var __tsan_go_ignore_sync_begin byte
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//go:linkname __tsan_go_ignore_sync_end __tsan_go_ignore_sync_end
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var __tsan_go_ignore_sync_end byte
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// Mimic what cmd/cgo would do.
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//go:cgo_import_static __tsan_init
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//go:cgo_import_static __tsan_fini
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//go:cgo_import_static __tsan_map_shadow
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//go:cgo_import_static __tsan_finalizer_goroutine
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//go:cgo_import_static __tsan_go_start
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//go:cgo_import_static __tsan_go_end
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//go:cgo_import_static __tsan_malloc
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//go:cgo_import_static __tsan_acquire
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//go:cgo_import_static __tsan_release
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//go:cgo_import_static __tsan_release_merge
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//go:cgo_import_static __tsan_go_ignore_sync_begin
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//go:cgo_import_static __tsan_go_ignore_sync_end
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// These are called from race_amd64.s.
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//go:cgo_import_static __tsan_read
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//go:cgo_import_static __tsan_read_pc
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//go:cgo_import_static __tsan_read_range
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//go:cgo_import_static __tsan_write
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//go:cgo_import_static __tsan_write_pc
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//go:cgo_import_static __tsan_write_range
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//go:cgo_import_static __tsan_func_enter
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//go:cgo_import_static __tsan_func_exit
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//go:cgo_import_static __tsan_go_atomic32_load
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//go:cgo_import_static __tsan_go_atomic64_load
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//go:cgo_import_static __tsan_go_atomic32_store
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//go:cgo_import_static __tsan_go_atomic64_store
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//go:cgo_import_static __tsan_go_atomic32_exchange
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//go:cgo_import_static __tsan_go_atomic64_exchange
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//go:cgo_import_static __tsan_go_atomic32_fetch_add
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//go:cgo_import_static __tsan_go_atomic64_fetch_add
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//go:cgo_import_static __tsan_go_atomic32_compare_exchange
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//go:cgo_import_static __tsan_go_atomic64_compare_exchange
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// start/end of global data (data+bss).
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var racedatastart uintptr
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var racedataend uintptr
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// start/end of heap for race_amd64.s
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var racearenastart uintptr
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var racearenaend uintptr
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func racefuncenter(uintptr)
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func racefuncexit()
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func racereadrangepc1(uintptr, uintptr, uintptr)
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func racewriterangepc1(uintptr, uintptr, uintptr)
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func racesymbolizethunk(uintptr)
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// racecall allows calling an arbitrary function f from C race runtime
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// with up to 4 uintptr arguments.
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func racecall(*byte, uintptr, uintptr, uintptr, uintptr)
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// checks if the address has shadow (i.e. heap or data/bss)
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//go:nosplit
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func isvalidaddr(addr unsafe.Pointer) bool {
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return racearenastart <= uintptr(addr) && uintptr(addr) < racearenaend ||
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racedatastart <= uintptr(addr) && uintptr(addr) < racedataend
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}
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//go:nosplit
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func raceinit() uintptr {
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// cgo is required to initialize libc, which is used by race runtime
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if !iscgo {
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throw("raceinit: race build must use cgo")
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}
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var racectx uintptr
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racecall(&__tsan_init, uintptr(unsafe.Pointer(&racectx)), funcPC(racesymbolizethunk), 0, 0)
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// Round data segment to page boundaries, because it's used in mmap().
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start := ^uintptr(0)
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end := uintptr(0)
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if start > firstmoduledata.noptrdata {
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start = firstmoduledata.noptrdata
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}
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if start > firstmoduledata.data {
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start = firstmoduledata.data
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}
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if start > firstmoduledata.noptrbss {
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start = firstmoduledata.noptrbss
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}
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if start > firstmoduledata.bss {
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start = firstmoduledata.bss
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}
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if end < firstmoduledata.enoptrdata {
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end = firstmoduledata.enoptrdata
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}
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if end < firstmoduledata.edata {
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end = firstmoduledata.edata
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}
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if end < firstmoduledata.enoptrbss {
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end = firstmoduledata.enoptrbss
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}
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if end < firstmoduledata.ebss {
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end = firstmoduledata.ebss
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}
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size := round(end-start, _PageSize)
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racecall(&__tsan_map_shadow, start, size, 0, 0)
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racedatastart = start
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racedataend = start + size
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return racectx
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}
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//go:nosplit
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func racefini() {
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racecall(&__tsan_fini, 0, 0, 0, 0)
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}
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//go:nosplit
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func racemapshadow(addr unsafe.Pointer, size uintptr) {
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if racearenastart == 0 {
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racearenastart = uintptr(addr)
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}
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if racearenaend < uintptr(addr)+size {
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racearenaend = uintptr(addr) + size
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}
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racecall(&__tsan_map_shadow, uintptr(addr), size, 0, 0)
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}
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//go:nosplit
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func racemalloc(p unsafe.Pointer, sz uintptr) {
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racecall(&__tsan_malloc, uintptr(p), sz, 0, 0)
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}
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//go:nosplit
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func racegostart(pc uintptr) uintptr {
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_g_ := getg()
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var spawng *g
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if _g_.m.curg != nil {
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spawng = _g_.m.curg
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} else {
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spawng = _g_
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}
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var racectx uintptr
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racecall(&__tsan_go_start, spawng.racectx, uintptr(unsafe.Pointer(&racectx)), pc, 0)
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return racectx
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}
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//go:nosplit
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func racegoend() {
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racecall(&__tsan_go_end, getg().racectx, 0, 0, 0)
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}
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//go:nosplit
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func racewriterangepc(addr unsafe.Pointer, sz, callpc, pc uintptr) {
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_g_ := getg()
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if _g_ != _g_.m.curg {
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// The call is coming from manual instrumentation of Go code running on g0/gsignal.
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// Not interesting.
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return
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}
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if callpc != 0 {
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racefuncenter(callpc)
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}
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racewriterangepc1(uintptr(addr), sz, pc)
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if callpc != 0 {
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racefuncexit()
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}
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}
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//go:nosplit
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func racereadrangepc(addr unsafe.Pointer, sz, callpc, pc uintptr) {
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_g_ := getg()
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if _g_ != _g_.m.curg {
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// The call is coming from manual instrumentation of Go code running on g0/gsignal.
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// Not interesting.
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return
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}
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if callpc != 0 {
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racefuncenter(callpc)
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}
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racereadrangepc1(uintptr(addr), sz, pc)
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if callpc != 0 {
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racefuncexit()
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}
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}
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//go:nosplit
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func raceacquire(addr unsafe.Pointer) {
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raceacquireg(getg(), addr)
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}
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//go:nosplit
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func raceacquireg(gp *g, addr unsafe.Pointer) {
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if getg().raceignore != 0 || !isvalidaddr(addr) {
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return
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}
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racecall(&__tsan_acquire, gp.racectx, uintptr(addr), 0, 0)
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}
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//go:nosplit
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func racerelease(addr unsafe.Pointer) {
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_g_ := getg()
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if _g_.raceignore != 0 || !isvalidaddr(addr) {
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return
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}
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racereleaseg(_g_, addr)
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}
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//go:nosplit
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func racereleaseg(gp *g, addr unsafe.Pointer) {
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if getg().raceignore != 0 || !isvalidaddr(addr) {
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return
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}
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racecall(&__tsan_release, gp.racectx, uintptr(addr), 0, 0)
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}
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//go:nosplit
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func racereleasemerge(addr unsafe.Pointer) {
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racereleasemergeg(getg(), addr)
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}
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//go:nosplit
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func racereleasemergeg(gp *g, addr unsafe.Pointer) {
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if getg().raceignore != 0 || !isvalidaddr(addr) {
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return
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}
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racecall(&__tsan_release_merge, gp.racectx, uintptr(addr), 0, 0)
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}
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//go:nosplit
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func racefingo() {
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racecall(&__tsan_finalizer_goroutine, getg().racectx, 0, 0, 0)
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}
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//go:nosplit
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func RaceAcquire(addr unsafe.Pointer) {
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raceacquire(addr)
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}
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//go:nosplit
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func RaceRelease(addr unsafe.Pointer) {
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racerelease(addr)
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}
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//go:nosplit
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func RaceReleaseMerge(addr unsafe.Pointer) {
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racereleasemerge(addr)
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}
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//go:nosplit
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// RaceDisable disables handling of race events in the current goroutine.
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func RaceDisable() {
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_g_ := getg()
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if _g_.raceignore == 0 {
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racecall(&__tsan_go_ignore_sync_begin, _g_.racectx, 0, 0, 0)
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}
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_g_.raceignore++
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}
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//go:nosplit
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// RaceEnable re-enables handling of race events in the current goroutine.
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func RaceEnable() {
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_g_ := getg()
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_g_.raceignore--
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if _g_.raceignore == 0 {
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racecall(&__tsan_go_ignore_sync_end, _g_.racectx, 0, 0, 0)
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}
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}
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@ -1,315 +0,0 @@
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Implementation of the race detector API.
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// +build race
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package runtime
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import "unsafe"
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// Race runtime functions called via runtime·racecall.
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//go:linkname __tsan_init __tsan_init
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var __tsan_init byte
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//go:linkname __tsan_fini __tsan_fini
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var __tsan_fini byte
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//go:linkname __tsan_map_shadow __tsan_map_shadow
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var __tsan_map_shadow byte
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//go:linkname __tsan_finalizer_goroutine __tsan_finalizer_goroutine
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var __tsan_finalizer_goroutine byte
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//go:linkname __tsan_go_start __tsan_go_start
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var __tsan_go_start byte
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//go:linkname __tsan_go_end __tsan_go_end
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var __tsan_go_end byte
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//go:linkname __tsan_malloc __tsan_malloc
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var __tsan_malloc byte
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//go:linkname __tsan_acquire __tsan_acquire
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var __tsan_acquire byte
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//go:linkname __tsan_release __tsan_release
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var __tsan_release byte
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//go:linkname __tsan_release_merge __tsan_release_merge
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var __tsan_release_merge byte
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//go:linkname __tsan_go_ignore_sync_begin __tsan_go_ignore_sync_begin
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var __tsan_go_ignore_sync_begin byte
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//go:linkname __tsan_go_ignore_sync_end __tsan_go_ignore_sync_end
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var __tsan_go_ignore_sync_end byte
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// Mimic what cmd/cgo would do.
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//go:cgo_import_static __tsan_init
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//go:cgo_import_static __tsan_fini
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//go:cgo_import_static __tsan_map_shadow
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//go:cgo_import_static __tsan_finalizer_goroutine
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//go:cgo_import_static __tsan_go_start
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//go:cgo_import_static __tsan_go_end
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//go:cgo_import_static __tsan_malloc
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//go:cgo_import_static __tsan_acquire
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//go:cgo_import_static __tsan_release
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//go:cgo_import_static __tsan_release_merge
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//go:cgo_import_static __tsan_go_ignore_sync_begin
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//go:cgo_import_static __tsan_go_ignore_sync_end
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// These are called from race_amd64.s.
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//go:cgo_import_static __tsan_read
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//go:cgo_import_static __tsan_read_pc
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//go:cgo_import_static __tsan_read_range
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//go:cgo_import_static __tsan_write
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//go:cgo_import_static __tsan_write_pc
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//go:cgo_import_static __tsan_write_range
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//go:cgo_import_static __tsan_func_enter
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//go:cgo_import_static __tsan_func_exit
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//go:cgo_import_static __tsan_go_atomic32_load
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//go:cgo_import_static __tsan_go_atomic64_load
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//go:cgo_import_static __tsan_go_atomic32_store
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//go:cgo_import_static __tsan_go_atomic64_store
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//go:cgo_import_static __tsan_go_atomic32_exchange
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//go:cgo_import_static __tsan_go_atomic64_exchange
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//go:cgo_import_static __tsan_go_atomic32_fetch_add
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//go:cgo_import_static __tsan_go_atomic64_fetch_add
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//go:cgo_import_static __tsan_go_atomic32_compare_exchange
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//go:cgo_import_static __tsan_go_atomic64_compare_exchange
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// start/end of global data (data+bss).
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var racedatastart uintptr
|
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var racedataend uintptr
|
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|
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// start/end of heap for race_amd64.s
|
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var racearenastart uintptr
|
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var racearenaend uintptr
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|
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func racefuncenter(uintptr)
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func racefuncexit()
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func racereadrangepc1(uintptr, uintptr, uintptr)
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func racewriterangepc1(uintptr, uintptr, uintptr)
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func racesymbolizethunk(uintptr)
|
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|
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// racecall allows calling an arbitrary function f from C race runtime
|
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// with up to 4 uintptr arguments.
|
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func racecall(*byte, uintptr, uintptr, uintptr, uintptr)
|
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|
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// checks if the address has shadow (i.e. heap or data/bss)
|
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//go:nosplit
|
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func isvalidaddr(addr unsafe.Pointer) bool {
|
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return racearenastart <= uintptr(addr) && uintptr(addr) < racearenaend ||
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racedatastart <= uintptr(addr) && uintptr(addr) < racedataend
|
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}
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//go:nosplit
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func raceinit() uintptr {
|
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// cgo is required to initialize libc, which is used by race runtime
|
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if !iscgo {
|
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throw("raceinit: race build must use cgo")
|
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}
|
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|
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var racectx uintptr
|
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racecall(&__tsan_init, uintptr(unsafe.Pointer(&racectx)), funcPC(racesymbolizethunk), 0, 0)
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|
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// Round data segment to page boundaries, because it's used in mmap().
|
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start := ^uintptr(0)
|
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end := uintptr(0)
|
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if start > firstmoduledata.noptrdata {
|
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start = firstmoduledata.noptrdata
|
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}
|
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if start > firstmoduledata.data {
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start = firstmoduledata.data
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}
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if start > firstmoduledata.noptrbss {
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start = firstmoduledata.noptrbss
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}
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if start > firstmoduledata.bss {
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start = firstmoduledata.bss
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}
|
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if end < firstmoduledata.enoptrdata {
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end = firstmoduledata.enoptrdata
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}
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if end < firstmoduledata.edata {
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end = firstmoduledata.edata
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||||
}
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if end < firstmoduledata.enoptrbss {
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end = firstmoduledata.enoptrbss
|
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}
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if end < firstmoduledata.ebss {
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end = firstmoduledata.ebss
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||||
}
|
||||
size := round(end-start, _PageSize)
|
||||
racecall(&__tsan_map_shadow, start, size, 0, 0)
|
||||
racedatastart = start
|
||||
racedataend = start + size
|
||||
|
||||
return racectx
|
||||
}
|
||||
|
||||
//go:nosplit
|
||||
func racefini() {
|
||||
racecall(&__tsan_fini, 0, 0, 0, 0)
|
||||
}
|
||||
|
||||
//go:nosplit
|
||||
func racemapshadow(addr unsafe.Pointer, size uintptr) {
|
||||
if racearenastart == 0 {
|
||||
racearenastart = uintptr(addr)
|
||||
}
|
||||
if racearenaend < uintptr(addr)+size {
|
||||
racearenaend = uintptr(addr) + size
|
||||
}
|
||||
racecall(&__tsan_map_shadow, uintptr(addr), size, 0, 0)
|
||||
}
|
||||
|
||||
//go:nosplit
|
||||
func racemalloc(p unsafe.Pointer, sz uintptr) {
|
||||
racecall(&__tsan_malloc, uintptr(p), sz, 0, 0)
|
||||
}
|
||||
|
||||
//go:nosplit
|
||||
func racegostart(pc uintptr) uintptr {
|
||||
_g_ := getg()
|
||||
var spawng *g
|
||||
if _g_.m.curg != nil {
|
||||
spawng = _g_.m.curg
|
||||
} else {
|
||||
spawng = _g_
|
||||
}
|
||||
|
||||
var racectx uintptr
|
||||
racecall(&__tsan_go_start, spawng.racectx, uintptr(unsafe.Pointer(&racectx)), pc, 0)
|
||||
return racectx
|
||||
}
|
||||
|
||||
//go:nosplit
|
||||
func racegoend() {
|
||||
racecall(&__tsan_go_end, getg().racectx, 0, 0, 0)
|
||||
}
|
||||
|
||||
//go:nosplit
|
||||
func racewriterangepc(addr unsafe.Pointer, sz, callpc, pc uintptr) {
|
||||
_g_ := getg()
|
||||
if _g_ != _g_.m.curg {
|
||||
// The call is coming from manual instrumentation of Go code running on g0/gsignal.
|
||||
// Not interesting.
|
||||
return
|
||||
}
|
||||
if callpc != 0 {
|
||||
racefuncenter(callpc)
|
||||
}
|
||||
racewriterangepc1(uintptr(addr), sz, pc)
|
||||
if callpc != 0 {
|
||||
racefuncexit()
|
||||
}
|
||||
}
|
||||
|
||||
//go:nosplit
|
||||
func racereadrangepc(addr unsafe.Pointer, sz, callpc, pc uintptr) {
|
||||
_g_ := getg()
|
||||
if _g_ != _g_.m.curg {
|
||||
// The call is coming from manual instrumentation of Go code running on g0/gsignal.
|
||||
// Not interesting.
|
||||
return
|
||||
}
|
||||
if callpc != 0 {
|
||||
racefuncenter(callpc)
|
||||
}
|
||||
racereadrangepc1(uintptr(addr), sz, pc)
|
||||
if callpc != 0 {
|
||||
racefuncexit()
|
||||
}
|
||||
}
|
||||
|
||||
//go:nosplit
|
||||
func raceacquire(addr unsafe.Pointer) {
|
||||
raceacquireg(getg(), addr)
|
||||
}
|
||||
|
||||
//go:nosplit
|
||||
func raceacquireg(gp *g, addr unsafe.Pointer) {
|
||||
if getg().raceignore != 0 || !isvalidaddr(addr) {
|
||||
return
|
||||
}
|
||||
racecall(&__tsan_acquire, gp.racectx, uintptr(addr), 0, 0)
|
||||
}
|
||||
|
||||
//go:nosplit
|
||||
func racerelease(addr unsafe.Pointer) {
|
||||
_g_ := getg()
|
||||
if _g_.raceignore != 0 || !isvalidaddr(addr) {
|
||||
return
|
||||
}
|
||||
racereleaseg(_g_, addr)
|
||||
}
|
||||
|
||||
//go:nosplit
|
||||
func racereleaseg(gp *g, addr unsafe.Pointer) {
|
||||
if getg().raceignore != 0 || !isvalidaddr(addr) {
|
||||
return
|
||||
}
|
||||
racecall(&__tsan_release, gp.racectx, uintptr(addr), 0, 0)
|
||||
}
|
||||
|
||||
//go:nosplit
|
||||
func racereleasemerge(addr unsafe.Pointer) {
|
||||
racereleasemergeg(getg(), addr)
|
||||
}
|
||||
|
||||
//go:nosplit
|
||||
func racereleasemergeg(gp *g, addr unsafe.Pointer) {
|
||||
if getg().raceignore != 0 || !isvalidaddr(addr) {
|
||||
return
|
||||
}
|
||||
racecall(&__tsan_release_merge, gp.racectx, uintptr(addr), 0, 0)
|
||||
}
|
||||
|
||||
//go:nosplit
|
||||
func racefingo() {
|
||||
racecall(&__tsan_finalizer_goroutine, getg().racectx, 0, 0, 0)
|
||||
}
|
||||
|
||||
//go:nosplit
|
||||
|
||||
func RaceAcquire(addr unsafe.Pointer) {
|
||||
raceacquire(addr)
|
||||
}
|
||||
|
||||
//go:nosplit
|
||||
|
||||
func RaceRelease(addr unsafe.Pointer) {
|
||||
racerelease(addr)
|
||||
}
|
||||
|
||||
//go:nosplit
|
||||
|
||||
func RaceReleaseMerge(addr unsafe.Pointer) {
|
||||
racereleasemerge(addr)
|
||||
}
|
||||
|
||||
//go:nosplit
|
||||
|
||||
// RaceDisable disables handling of race events in the current goroutine.
|
||||
func RaceDisable() {
|
||||
_g_ := getg()
|
||||
if _g_.raceignore == 0 {
|
||||
racecall(&__tsan_go_ignore_sync_begin, _g_.racectx, 0, 0, 0)
|
||||
}
|
||||
_g_.raceignore++
|
||||
}
|
||||
|
||||
//go:nosplit
|
||||
|
||||
// RaceEnable re-enables handling of race events in the current goroutine.
|
||||
func RaceEnable() {
|
||||
_g_ := getg()
|
||||
_g_.raceignore--
|
||||
if _g_.raceignore == 0 {
|
||||
racecall(&__tsan_go_ignore_sync_end, _g_.racectx, 0, 0, 0)
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user