Ledda/djstdlib
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update os layer

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This commit is contained in:
Daniel Ledda
2025-01-02 11:02:27 +01:00
parent 5f0eaedfc6
commit 39ff16b6a6
7 changed files with 71 additions and 17 deletions
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12
core.cpp
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@@ -1,5 +1,6 @@
#define STB_SPRINTF_IMPLEMENTATION
#include "core.h"
#include "os.h"
void *pushSize(Arena *arena, size_t bytes) {
if (arena->capacity - arena->head >= bytes) {
@@ -11,11 +12,7 @@ void *pushSize(Arena *arena, size_t bytes) {
}
Arena *arenaAlloc(size_t capacity) {
#if OS_WINDOWS
Arena *result = (Arena *)VirtualAlloc(NULL, sizeof(Arena) + capacity, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
#elif OS_LINUX
Arena *result = (Arena *)mmap(0, capacity, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
#endif
Arena *result = (Arena *)os_alloc(sizeof(Arena) + capacity);
result->memory = result + sizeof(Arena);
result->capacity = capacity;
result->head = 0;
@@ -23,6 +20,7 @@ Arena *arenaAlloc(size_t capacity) {
}
void arenaFree(Arena *arena) {
os_free(arena);
#if OS_WINDOWS
VirtualFree(arena, NULL, MEM_RELEASE);
#elif OS_LINUX
@@ -315,9 +313,9 @@ string readEntireFile(Arena *arena, string filename) {
}
return result;
#elif OS_LINUX
FILE *input = fopen((char *)file.str, "r");
FILE *input = fopen((char *)filename.str, "r");
struct stat st;
stat((char *)file.str, &st);
stat((char *)filename.str, &st);
size_t fsize = st.st_size;
string readBuffer = PushString(arena, filesize);
readBuffer.length = filesize;