diff options
Diffstat (limited to 'src/pkg/runtime/mem_openbsd.c')
| -rw-r--r-- | src/pkg/runtime/mem_openbsd.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/src/pkg/runtime/mem_openbsd.c b/src/pkg/runtime/mem_openbsd.c index 91e36eb60..861ae90c7 100644 --- a/src/pkg/runtime/mem_openbsd.c +++ b/src/pkg/runtime/mem_openbsd.c @@ -45,32 +45,41 @@ runtime·SysFree(void *v, uintptr n, uint64 *stat) runtime·munmap(v, n); } +void +runtime·SysFault(void *v, uintptr n) +{ + runtime·mmap(v, n, PROT_NONE, MAP_ANON|MAP_PRIVATE|MAP_FIXED, -1, 0); +} + void* -runtime·SysReserve(void *v, uintptr n) +runtime·SysReserve(void *v, uintptr n, bool *reserved) { void *p; // On 64-bit, people with ulimit -v set complain if we reserve too // much address space. Instead, assume that the reservation is okay // and check the assumption in SysMap. - if(sizeof(void*) == 8) + if(sizeof(void*) == 8 && n > 1LL<<32) { + *reserved = false; return v; + } p = runtime·mmap(v, n, PROT_NONE, MAP_ANON|MAP_PRIVATE, -1, 0); if(p < (void*)4096) return nil; + *reserved = true; return p; } void -runtime·SysMap(void *v, uintptr n, uint64 *stat) +runtime·SysMap(void *v, uintptr n, bool reserved, uint64 *stat) { void *p; runtime·xadd64(stat, n); // On 64-bit, we don't actually have v reserved, so tread carefully. - if(sizeof(void*) == 8) { + if(!reserved) { p = runtime·mmap(v, n, PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0); if(p == (void*)ENOMEM) runtime·throw("runtime: out of memory"); |