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wheremyfoodat 2025-08-04 00:43:02 +03:00
commit b7b245a7b0
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53
third_party/host_memory/virtual_buffer.cpp vendored
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@ -10,38 +10,37 @@
#include "host_memory/virtual_buffer.h"
namespace Common {
void* AllocateMemoryPages(std::size_t size) noexcept {
void* AllocateMemoryPages(std::size_t size) noexcept {
#ifdef _WIN32
void* base{VirtualAlloc(nullptr, size, MEM_COMMIT, PAGE_READWRITE)};
void* base{VirtualAlloc(nullptr, size, MEM_COMMIT, PAGE_READWRITE)};
#else
void* base{mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0)};
void* base{mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0)};
if (base == MAP_FAILED) {
base = nullptr;
}
if (base == MAP_FAILED) {
base = nullptr;
}
#endif
if (!base) {
Helpers::panic("Failed to allocate memory pages");
}
if (!base) {
Helpers::panic("Failed to allocate memory pages");
}
return base;
}
void FreeMemoryPages(void* base, [[maybe_unused]] std::size_t size) noexcept {
if (!base) {
return;
}
#ifdef _WIN32
if (!VirtualFree(base, 0, MEM_RELEASE)) {
Helpers::panic("Failed to free memory pages");
return base;
}
#else
if (munmap(base, size) != 0) {
Helpers::panic("Failed to free memory pages");
}
#endif
}
} // namespace Common
void FreeMemoryPages(void* base, [[maybe_unused]] std::size_t size) noexcept {
if (!base) {
return;
}
#ifdef _WIN32
if (!VirtualFree(base, 0, MEM_RELEASE)) {
Helpers::panic("Failed to free memory pages");
}
#else
if (munmap(base, size) != 0) {
Helpers::panic("Failed to free memory pages");
}
#endif
}
} // namespace Common