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Export of internal Abseil changes.

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5278e56bd7d322ecf161eaf29fd7fa3941d7431b by Greg Falcon <gfalcon@google.com>:

internal change

PiperOrigin-RevId: 222078614
GitOrigin-RevId: 5278e56bd7d322ecf161eaf29fd7fa3941d7431b
Change-Id: I1e86bef2e3733c81148a1a42dccd8182fe3f7fae
This commit is contained in:
Abseil Team 2018-11-19 08:14:58 -08:00 • committed by Derek Mauro
parent f6ae816808
commit 3088e76c59
4 changed files with 14 additions and 0 deletions
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4
absl/base/internal/direct_mmap.h
View file

@ -75,7 +75,11 @@ inline void* DirectMmap(void* start, size_t length, int prot, int flags, int fd,
// On these architectures, implement mmap with mmap2.
static int pagesize = 0;
if (pagesize == 0) {
#if defined(__wasm__) || defined(__asmjs__)
pagesize = getpagesize();
#else
pagesize = sysconf(_SC_PAGESIZE);
#endif
}
if (offset < 0 || offset % pagesize != 0) {
errno = EINVAL;

2
absl/base/internal/low_level_alloc.cc
View file

@ -324,6 +324,8 @@ size_t GetPageSize() {
SYSTEM_INFO system_info;
GetSystemInfo(&system_info);
return std::max(system_info.dwPageSize, system_info.dwAllocationGranularity);
#elif defined(__wasm__) || defined(__asmjs__)
return getpagesize();
#else
return sysconf(_SC_PAGESIZE);
#endif