diff options
Diffstat (limited to 'src/pkg')
| -rw-r--r-- | src/pkg/runtime/malloc.goc | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/pkg/runtime/malloc.goc b/src/pkg/runtime/malloc.goc index 84e0ac4795..6d2f65b3c9 100644 --- a/src/pkg/runtime/malloc.goc +++ b/src/pkg/runtime/malloc.goc @@ -80,6 +80,7 @@ runtime·mallocgc(uintptr size, uint32 flag, int32 dogc, int32 zeroed) m->mcache->next_sample -= size; else { // pick next profile time + // If you change this, also change allocmcache. if(rate > 0x3fffffff) // make 2*rate not overflow rate = 0x3fffffff; m->mcache->next_sample = runtime·fastrand1() % (2*rate); @@ -205,6 +206,7 @@ runtime·mlookup(void *v, byte **base, uintptr *size, MSpan **sp) MCache* runtime·allocmcache(void) { + int32 rate; MCache *c; runtime·lock(&runtime·mheap); @@ -212,6 +214,13 @@ runtime·allocmcache(void) mstats.mcache_inuse = runtime·mheap.cachealloc.inuse; mstats.mcache_sys = runtime·mheap.cachealloc.sys; runtime·unlock(&runtime·mheap); + + // Set first allocation sample size. + rate = runtime·MemProfileRate; + if(rate > 0x3fffffff) // make 2*rate not overflow + rate = 0x3fffffff; + c->next_sample = runtime·fastrand1() % (2*rate); + return c; } |