bsnes-libretro/libco/fiber.c

56 lines
1.0 KiB
C

#define LIBCO_C
#include "libco.h"
#include "settings.h"
#define WINVER 0x0400
#define _WIN32_WINNT 0x0400
#include <windows.h>
#ifdef __cplusplus
extern "C" {
#endif
static thread_local cothread_t co_active_ = 0;
static void __stdcall co_thunk(void* coentry) {
((void (*)(void))coentry)();
}
cothread_t co_active() {
if(!co_active_) {
ConvertThreadToFiber(0);
co_active_ = GetCurrentFiber();
}
return co_active_;
}
cothread_t co_derive(void* memory, unsigned int heapsize, void (*coentry)(void)) {
/* Windows fibers do not allow users to supply their own memory */
return (cothread_t)0;
}
cothread_t co_create(unsigned int heapsize, void (*coentry)(void)) {
if(!co_active_) {
ConvertThreadToFiber(0);
co_active_ = GetCurrentFiber();
}
return (cothread_t)CreateFiber(heapsize, co_thunk, (void*)coentry);
}
void co_delete(cothread_t cothread) {
DeleteFiber(cothread);
}
void co_switch(cothread_t cothread) {
co_active_ = cothread;
SwitchToFiber(cothread);
}
int co_serializable() {
return 0;
}
#ifdef __cplusplus
}
#endif