93 lines
3.1 KiB
C++
93 lines
3.1 KiB
C++
#ifndef OS_IMPL_WIN32_CPP
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#define OS_IMPL_WIN32_CPP
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#include "Windows.h"
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#include "os.h"
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void *os_alloc(size_t commitSize) {
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return VirtualAlloc(NULL, commitSize, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
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}
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void os_reserve(void *ptr) {
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}
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void os_decommit(void *ptr) {
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}
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void os_free(void *ptr, size_t size) {
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VirtualFree(ptr, NULL, MEM_RELEASE);
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}
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string os_readEntireFile(Arena *arena, string filename) {
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string result = {0};
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HANDLE fileHandle = CreateFileA(cstring(arena, filename), GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, NULL, NULL);
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if (fileHandle != INVALID_HANDLE_VALUE) {
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LARGE_INTEGER fileSize;
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if (GetFileSizeEx(fileHandle, &fileSize)) {
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string readfile = PushString(arena, (size_t)fileSize.QuadPart);
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if (readfile.str) {
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DWORD bytesRead;
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if (ReadFile(fileHandle, readfile.str, (DWORD)fileSize.QuadPart, &bytesRead, NULL) && (fileSize.QuadPart == bytesRead)) {
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result = readfile;
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}
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}
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}
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CloseHandle(fileHandle);
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}
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return result;
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}
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bool os_writeEntireFile(Arena *arena, string filename, const byte *contents, size_t contentsLength) {
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bool result = false;
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HANDLE fileHandle = CreateFileA(cstring(arena, filename), GENERIC_WRITE, FILE_SHARE_READ, NULL, CREATE_ALWAYS, NULL, NULL);
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if (fileHandle != INVALID_HANDLE_VALUE) {
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DWORD bytesWritten;
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if (WriteFile(fileHandle, contents, (DWORD)contentsLength, &bytesWritten, NULL)) {
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// file written successfully
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result = bytesWritten == contentsLength;
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}
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CloseHandle(fileHandle);
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}
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return result;
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}
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bool os_fileAppend(Arena *arena, string filename, const byte *contents, size_t contentsLength) {
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bool result = false;
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HANDLE fileHandle = CreateFileA(cstring(arena, filename), FILE_APPEND_DATA | FILE_GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
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if (fileHandle != INVALID_HANDLE_VALUE) {
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DWORD bytesWritten;
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DWORD position = SetFilePointer(fileHandle, 0, NULL, FILE_END);
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if (WriteFile(fileHandle, contents, (DWORD)contentsLength, &bytesWritten, NULL)) {
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// file written successfully
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result = bytesWritten == contentsLength;
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}
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CloseHandle(fileHandle);
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}
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return result;
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}
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function void os_log(LogTarget target, const char *fmt, va_list argList) {
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Scratch scratch = scratchStart(0, 0);
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string result = strPrintfv(scratch.arena, fmt, argList);
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DWORD done;
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HANDLE stdHandle;
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switch (target) {
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case LogTarget_stdin:
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stdHandle = GetStdHandle(STD_INPUT_HANDLE);
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break;
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case LogTarget_stdout:
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stdHandle = GetStdHandle(STD_ERROR_HANDLE);
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break;
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case LogTarget_stderr:
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stdHandle = GetStdHandle(STD_OUTPUT_HANDLE);
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break;
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default:
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stdHandle = GetStdHandle(STD_OUTPUT_HANDLE);
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break;
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}
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WriteFile(stdHandle, result.str, (DWORD)result.length, &done, 0);
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scratchEnd(scratch);
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}
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#endif
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