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Use atomic variables for main loop flags

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This commit is contained in:
Kovid Goyal
2019-07-17 19:45:52 +05:30
parent c30c21b250
commit 89307727e7
1 changed files with 7 additions and 6 deletions
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13
glfw/main_loop.h vendored
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@@ -7,21 +7,22 @@
#pragma once #pragma once
#include "internal.h" #include "internal.h"
#include <stdatomic.h>
#ifndef GLFW_LOOP_BACKEND #ifndef GLFW_LOOP_BACKEND
#define GLFW_LOOP_BACKEND x11 #define GLFW_LOOP_BACKEND x11
#endif #endif
static bool keep_going = false, tick_callback_requested = false; static atomic_int keep_going = 0, tick_callback_requested = 0;
void _glfwPlatformRequestTickCallback() { void _glfwPlatformRequestTickCallback() {
EVDBG("tick_callback requested"); EVDBG("tick_callback requested");
tick_callback_requested = true; tick_callback_requested = 1;
} }
void _glfwPlatformStopMainLoop(void) { void _glfwPlatformStopMainLoop(void) {
if (keep_going) { if (keep_going) {
keep_going = false; keep_going = 0;
_glfwPlatformPostEmptyEvent(); _glfwPlatformPostEmptyEvent();
} }
} }
@@ -30,14 +31,14 @@ static inline void
dispatch_tick_callbacks(GLFWtickcallback tick_callback, void *data) { dispatch_tick_callbacks(GLFWtickcallback tick_callback, void *data) {
while (tick_callback_requested) { while (tick_callback_requested) {
EVDBG("Calling tick callback"); EVDBG("Calling tick callback");
tick_callback_requested = false; tick_callback_requested = 0;
tick_callback(data); tick_callback(data);
} }
} }
void _glfwPlatformRunMainLoop(GLFWtickcallback tick_callback, void* data) { void _glfwPlatformRunMainLoop(GLFWtickcallback tick_callback, void* data) {
keep_going = true; keep_going = 1;
tick_callback_requested = false; tick_callback_requested = 0;
while(keep_going) { while(keep_going) {
EVDBG("loop tick, tick_callback_requested: %d", tick_callback_requested); EVDBG("loop tick, tick_callback_requested: %d", tick_callback_requested);
dispatch_tick_callbacks(tick_callback, data); dispatch_tick_callbacks(tick_callback, data);