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Don't make empty savestate files when loading savestates

This commit is contained in:
Jeffrey Pfau 2014-07-23 00:19:50 -07:00
parent 94001b1133
commit c7f7d0f752
2 changed files with 8 additions and 19 deletions
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24
src/gba/gba-serialize.c
View File

@ -68,11 +68,11 @@ void GBADeserialize(struct GBA* gba, struct GBASerializedState* state) {
GBAAudioDeserialize(&gba->audio, state);
}
static struct VFile* _getStateVf(struct GBA* gba, int slot) {
static struct VFile* _getStateVf(struct GBA* gba, int slot, bool write) {
char path[PATH_MAX];
path[PATH_MAX - 1] = '\0';
snprintf(path, PATH_MAX - 1, "%s.ss%d", gba->activeFile, slot);
struct VFile* vf = VFileOpen(path, O_CREAT | O_RDWR);
struct VFile* vf = VFileOpen(path, write ? (O_CREAT | O_RDWR) : O_RDONLY);
if (vf) {
vf->truncate(vf, sizeof(struct GBASerializedState));
}
@ -80,37 +80,29 @@ static struct VFile* _getStateVf(struct GBA* gba, int slot) {
}
bool GBASaveState(struct GBA* gba, int slot) {
struct VFile* vf = _getStateVf(gba, slot);
struct VFile* vf = _getStateVf(gba, slot, true);
if (!vf) {
return false;
}
struct GBASerializedState* state = GBAMapState(vf);
struct GBASerializedState* state = vf->map(vf, sizeof(struct GBASerializedState), MAP_WRITE);
GBASerialize(gba, state);
GBAUnmapState(vf, state);
vf->unmap(vf, state, sizeof(struct GBASerializedState));
vf->close(vf);
return true;
}
bool GBALoadState(struct GBA* gba, int slot) {
struct VFile* vf = _getStateVf(gba, slot);
struct VFile* vf = _getStateVf(gba, slot, false);
if (!vf) {
return false;
}
struct GBASerializedState* state = GBAMapState(vf);
struct GBASerializedState* state = vf->map(vf, sizeof(struct GBASerializedState), MAP_READ);
GBADeserialize(gba, state);
GBAUnmapState(vf, state);
vf->unmap(vf, state, sizeof(struct GBASerializedState));
vf->close(vf);
return true;
}
struct GBASerializedState* GBAMapState(struct VFile* vf) {
return vf->map(vf, sizeof(struct GBASerializedState), MAP_WRITE);
}
void GBAUnmapState(struct VFile* vf, struct GBASerializedState* state) {
vf->unmap(vf, state, sizeof(struct GBASerializedState));
}
struct GBASerializedState* GBAAllocateState(void) {
return anonymousMemoryMap(sizeof(struct GBASerializedState));
}

3
src/gba/gba-serialize.h
View File

@ -266,9 +266,6 @@ void GBADeserialize(struct GBA* gba, struct GBASerializedState* state);
bool GBASaveState(struct GBA* gba, int slot);
bool GBALoadState(struct GBA* gba, int slot);
struct GBASerializedState* GBAMapState(struct VFile* vf);
void GBAUnmapState(struct VFile* vf, struct GBASerializedState* state);
struct GBASerializedState* GBAAllocateState(void);
void GBADeallocateState(struct GBASerializedState* state);