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d5c09c9ab1
byuu says: Changelog: - ruby/audio/xaudio2: ported to new ruby API - ruby/video/cgl: ported to new ruby API (untested, won't compile) - ruby/video/directdraw: ported to new ruby API - ruby/video/gdi: ported to new ruby API - ruby/video/glx: ported to new ruby API - ruby/video/wgl: ported to new ruby API - ruby/video/opengl: code cleanups The macOS CGL driver is sure to have compilation errors. If someone will post the compilation error log, I can hopefully fix it in one or two iterations of WIPs. I am unable to test the Xorg GLX driver, because my FreeBSD desktop video card drivers do not support OpenGL 3.2. If the driver doesn't work, I'm going to need help tracking down what broke from the older releases. The real fun is still yet to come ... all the Linux-only drivers, where I don't have a single Linux machine to test with. Todo: - libco/fiber - libco/ucontext (I should really just delete this) - tomoko: hide main UI window when in exclusive fullscreen mode
99 lines
2.2 KiB
C
99 lines
2.2 KiB
C
/*
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note this was designed for UNIX systems. Based on ideas expressed in a paper by Ralf Engelschall.
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for SJLJ on other systems, one would want to rewrite springboard() and co_create() and hack the jmb_buf stack pointer.
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*/
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#define LIBCO_C
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#include "libco.h"
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#include "settings.h"
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#define _XOPEN_SOURCE 500
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#include <stdlib.h>
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#include <signal.h>
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#include <setjmp.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct {
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sigjmp_buf context;
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void (*coentry)(void);
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void* stack;
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} cothread_struct;
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static thread_local cothread_struct co_primary;
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static thread_local cothread_struct* creating;
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static thread_local cothread_struct* co_running = 0;
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static void springboard(int ignored) {
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if(sigsetjmp(creating->context, 0)) {
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co_running->coentry();
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}
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}
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cothread_t co_active() {
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if(!co_running) co_running = &co_primary;
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return (cothread_t)co_running;
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}
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cothread_t co_create(unsigned int size, void (*coentry)(void)) {
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if(!co_running) co_running = &co_primary;
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cothread_struct *thread = (cothread_struct*)malloc(sizeof(cothread_struct));
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if(thread) {
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struct sigaction handler;
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struct sigaction old_handler;
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stack_t stack;
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stack_t old_stack;
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thread->coentry = thread->stack = 0;
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stack.ss_flags = 0;
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stack.ss_size = size;
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thread->stack = stack.ss_sp = malloc(size);
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if(stack.ss_sp && !sigaltstack(&stack, &old_stack)) {
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handler.sa_handler = springboard;
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handler.sa_flags = SA_ONSTACK;
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sigemptyset(&handler.sa_mask);
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creating = thread;
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if(!sigaction(SIGUSR1, &handler, &old_handler)) {
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if(!raise(SIGUSR1)) {
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thread->coentry = coentry;
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}
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sigaltstack(&old_stack, 0);
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sigaction(SIGUSR1, &old_handler, 0);
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}
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}
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if(thread->coentry != coentry) {
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co_delete(thread);
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thread = 0;
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}
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}
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return (cothread_t)thread;
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}
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void co_delete(cothread_t cothread) {
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if(cothread) {
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if(((cothread_struct*)cothread)->stack) {
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free(((cothread_struct*)cothread)->stack);
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}
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free(cothread);
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}
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}
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void co_switch(cothread_t cothread) {
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if(!sigsetjmp(co_running->context, 0)) {
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co_running = (cothread_struct*)cothread;
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siglongjmp(co_running->context, 1);
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}
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}
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#ifdef __cplusplus
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}
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#endif
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