diff options
Diffstat (limited to 'deps/v8/src/base/platform/platform-freebsd.cc')
-rw-r--r-- | deps/v8/src/base/platform/platform-freebsd.cc | 104 |
1 files changed, 3 insertions, 101 deletions
diff --git a/deps/v8/src/base/platform/platform-freebsd.cc b/deps/v8/src/base/platform/platform-freebsd.cc index a1eb7e8928..2b9779b843 100644 --- a/deps/v8/src/base/platform/platform-freebsd.cc +++ b/deps/v8/src/base/platform/platform-freebsd.cc @@ -40,106 +40,8 @@ TimezoneCache* OS::CreateTimezoneCache() { return new PosixDefaultTimezoneCache(); } -// Constants used for mmap. -static const int kMmapFd = -1; -static const int kMmapFdOffset = 0; - -void* OS::Allocate(const size_t requested, size_t* allocated, - OS::MemoryPermission access, void* hint) { - const size_t msize = RoundUp(requested, getpagesize()); - int prot = GetProtectionFromMemoryPermission(access); - void* mbase = - mmap(hint, msize, prot, MAP_PRIVATE | MAP_ANON, kMmapFd, kMmapFdOffset); - - if (mbase == MAP_FAILED) return NULL; - *allocated = msize; - return mbase; -} - -// static -void* OS::ReserveRegion(size_t size, void* hint) { - void* result = mmap(hint, size, PROT_NONE, MAP_PRIVATE | MAP_ANON, kMmapFd, - kMmapFdOffset); - - if (result == MAP_FAILED) return NULL; - - return result; -} - -// static -void* OS::ReserveAlignedRegion(size_t size, size_t alignment, void* hint, - size_t* allocated) { - hint = AlignedAddress(hint, alignment); - DCHECK((alignment % OS::AllocateAlignment()) == 0); - size_t request_size = RoundUp(size + alignment, - static_cast<intptr_t>(OS::AllocateAlignment())); - void* result = ReserveRegion(request_size, hint); - if (result == nullptr) { - *allocated = 0; - return nullptr; - } - - uint8_t* base = static_cast<uint8_t*>(result); - uint8_t* aligned_base = RoundUp(base, alignment); - DCHECK_LE(base, aligned_base); - - // Unmap extra memory reserved before and after the desired block. - if (aligned_base != base) { - size_t prefix_size = static_cast<size_t>(aligned_base - base); - OS::Free(base, prefix_size); - request_size -= prefix_size; - } - - size_t aligned_size = RoundUp(size, OS::AllocateAlignment()); - DCHECK_LE(aligned_size, request_size); - - if (aligned_size != request_size) { - size_t suffix_size = request_size - aligned_size; - OS::Free(aligned_base + aligned_size, suffix_size); - request_size -= suffix_size; - } - - DCHECK(aligned_size == request_size); - - *allocated = aligned_size; - return static_cast<void*>(aligned_base); -} - -// static -bool OS::CommitRegion(void* address, size_t size, bool is_executable) { - int prot = PROT_READ | PROT_WRITE | (is_executable ? PROT_EXEC : 0); - if (MAP_FAILED == mmap(address, size, prot, - MAP_PRIVATE | MAP_ANON | MAP_FIXED, kMmapFd, - kMmapFdOffset)) { - return false; - } - return true; -} - -// static -bool OS::UncommitRegion(void* address, size_t size) { - return mmap(address, size, PROT_NONE, MAP_PRIVATE | MAP_ANON | MAP_FIXED, - kMmapFd, kMmapFdOffset) != MAP_FAILED; -} - -// static -bool OS::ReleaseRegion(void* address, size_t size) { - return munmap(address, size) == 0; -} - -// static -bool OS::ReleasePartialRegion(void* address, size_t size) { - return munmap(address, size) == 0; -} - -// static -bool OS::HasLazyCommits() { - // TODO(alph): implement for the platform. - return false; -} - static unsigned StringToLong(char* buffer) { - return static_cast<unsigned>(strtol(buffer, NULL, 16)); // NOLINT + return static_cast<unsigned>(strtol(buffer, nullptr, 16)); // NOLINT } std::vector<OS::SharedLibraryAddress> OS::GetSharedLibraryAddresses() { @@ -174,7 +76,7 @@ std::vector<OS::SharedLibraryAddress> OS::GetSharedLibraryAddresses() { if (buffer[3] != 'x') continue; char* start_of_path = index(buffer, '/'); // There may be no filename in this line. Skip to next. - if (start_of_path == NULL) continue; + if (start_of_path == nullptr) continue; buffer[bytes_read] = 0; result.push_back(SharedLibraryAddress(start_of_path, start, end)); } @@ -182,7 +84,7 @@ std::vector<OS::SharedLibraryAddress> OS::GetSharedLibraryAddresses() { return result; } -void OS::SignalCodeMovingGC(void* hint) {} +void OS::SignalCodeMovingGC() {} } // namespace base } // namespace v8 |