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| author | Carl Shapiro <cshapiro@google.com> | 2013-12-03 14:42:38 -0800 |
|---|---|---|
| committer | Carl Shapiro <cshapiro@google.com> | 2013-12-03 14:42:38 -0800 |
| commit | 48279bd567cc4d1efca9f69e713469fc6659eb26 (patch) | |
| tree | 593ffa542e9fc8fe9d6affaa0347d4ed938841e0 /src/pkg/runtime/malloc.goc | |
| parent | f238049a0073538caecfad1c60238a271426f43c (diff) | |
| download | go-48279bd567cc4d1efca9f69e713469fc6659eb26.tar.xz | |
runtime: add an allocation and free tracing for gc debugging
Output for an allocation and free (sweep) follows
MProf_Malloc(p=0xc2100210a0, size=0x50, type=0x0 <single object>)
#0 0x46ee15 runtime.mallocgc /usr/local/google/home/cshapiro/go/src/pkg/runtime/malloc.goc:141
#1 0x47004f runtime.settype_flush /usr/local/google/home/cshapiro/go/src/pkg/runtime/malloc.goc:612
#2 0x45f92c gc /usr/local/google/home/cshapiro/go/src/pkg/runtime/mgc0.c:2071
#3 0x45f89e mgc /usr/local/google/home/cshapiro/go/src/pkg/runtime/mgc0.c:2050
#4 0x45258b runtime.mcall /usr/local/google/home/cshapiro/go/src/pkg/runtime/asm_amd64.s:179
MProf_Free(p=0xc2100210a0, size=0x50)
#0 0x46ee15 runtime.mallocgc /usr/local/google/home/cshapiro/go/src/pkg/runtime/malloc.goc:141
#1 0x47004f runtime.settype_flush /usr/local/google/home/cshapiro/go/src/pkg/runtime/malloc.goc:612
#2 0x45f92c gc /usr/local/google/home/cshapiro/go/src/pkg/runtime/mgc0.c:2071
#3 0x45f89e mgc /usr/local/google/home/cshapiro/go/src/pkg/runtime/mgc0.c:2050
#4 0x45258b runtime.mcall /usr/local/google/home/cshapiro/go/src/pkg/runtime/asm_amd64.s:179
R=golang-dev, dvyukov, rsc, cshapiro
CC=golang-dev
https://golang.org/cl/21990045
Diffstat (limited to 'src/pkg/runtime/malloc.goc')
| -rw-r--r-- | src/pkg/runtime/malloc.goc | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/pkg/runtime/malloc.goc b/src/pkg/runtime/malloc.goc index c3ede4abdd..46d6450c06 100644 --- a/src/pkg/runtime/malloc.goc +++ b/src/pkg/runtime/malloc.goc @@ -122,6 +122,9 @@ runtime·mallocgc(uintptr size, uintptr typ, uint32 flag) if(m->locks == 0 && g->preempt) // restore the preemption request in case we've cleared it in newstack g->stackguard0 = StackPreempt; + if(runtime·debug.allocfreetrace) + goto profile; + if(!(flag & FlagNoProfiling) && (rate = runtime·MemProfileRate) > 0) { if(size >= rate) goto profile; @@ -135,7 +138,7 @@ runtime·mallocgc(uintptr size, uintptr typ, uint32 flag) m->mcache->next_sample = runtime·fastrand1() % (2*rate); profile: runtime·setblockspecial(v, true); - runtime·MProf_Malloc(v, size); + runtime·MProf_Malloc(v, size, typ); } } |