mirror/naiveproxy
1
0
Fork 0
mirror of https://github.com/klzgrad/naiveproxy.git synced 2024-11-24 06:16:30 +03:00
Code Issues Projects Releases Wiki Activity

allocator: Fix recommitted pages not being zeroed when madvise is not available.

Browse Source 
Support kernels built without CONFIG_ADVISE_SYSCALLS on small
embedded devices.
This commit is contained in:
klzgrad 2022-11-12 15:13:24 +08:00
parent 68051465db
commit be06c9cdac
2 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/base/allocator/partition_allocator/src/partition_alloc/page_allocator.h
View File

@ -258,6 +258,8 @@ constexpr PA_COMPONENT_EXPORT(
PARTITION_ALLOC) bool DecommittedMemoryIsAlwaysZeroed() { PARTITION_ALLOC) bool DecommittedMemoryIsAlwaysZeroed() {
#if BUILDFLAG(IS_APPLE) #if BUILDFLAG(IS_APPLE)
return false; return false;
#elif defined(NO_MADVISE_SYSCALL)
return false;
#else #else
return true; return true;
#endif #endif

3
src/base/allocator/partition_allocator/src/partition_alloc/page_allocator_internals_posix.h
View File

@ -418,6 +418,9 @@ void DiscardSystemPagesInternal(uintptr_t address, size_t length) {
ret = madvise(ptr, length, MADV_DONTNEED); ret = madvise(ptr, length, MADV_DONTNEED);
} }
PA_PCHECK(ret == 0); PA_PCHECK(ret == 0);
#elif defined(NO_MADVISE_SYSCALL)
static_cast<void>(ptr);
static_cast<void>(length);
#else // BUILDFLAG(IS_APPLE) #else // BUILDFLAG(IS_APPLE)
// We have experimented with other flags, but with suboptimal results. // We have experimented with other flags, but with suboptimal results.
// //