SDL 2.0
testthread.c File Reference
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include "SDL.h"
+ Include dependency graph for testthread.c:

Go to the source code of this file.

Functions

static void quit (int rc)
 
static const char * getprioritystr (SDL_ThreadPriority priority)
 
int ThreadFunc (void *data)
 
static void killed (int sig)
 
int main (int argc, char *argv[])
 

Variables

static SDL_TLSID tls
 
static int alive = 0
 
static int testprio = 0
 

Function Documentation

◆ getprioritystr()

static const char * getprioritystr ( SDL_ThreadPriority  priority)
static

Definition at line 34 of file testthread.c.

35{
36 switch(priority)
37 {
38 case SDL_THREAD_PRIORITY_LOW: return "SDL_THREAD_PRIORITY_LOW";
39 case SDL_THREAD_PRIORITY_NORMAL: return "SDL_THREAD_PRIORITY_NORMAL";
40 case SDL_THREAD_PRIORITY_HIGH: return "SDL_THREAD_PRIORITY_HIGH";
41 case SDL_THREAD_PRIORITY_TIME_CRITICAL: return "SDL_THREAD_PRIORITY_TIME_CRITICAL";
42 }
43
44 return "???";
45}
@ SDL_THREAD_PRIORITY_TIME_CRITICAL
Definition: SDL_thread.h:63
@ SDL_THREAD_PRIORITY_LOW
Definition: SDL_thread.h:60
@ SDL_THREAD_PRIORITY_HIGH
Definition: SDL_thread.h:62
@ SDL_THREAD_PRIORITY_NORMAL
Definition: SDL_thread.h:61

References SDL_THREAD_PRIORITY_HIGH, SDL_THREAD_PRIORITY_LOW, SDL_THREAD_PRIORITY_NORMAL, and SDL_THREAD_PRIORITY_TIME_CRITICAL.

Referenced by ThreadFunc().

◆ killed()

static void killed ( int  sig)
static

Definition at line 71 of file testthread.c.

72{
73 SDL_Log("Killed with SIGTERM, waiting 5 seconds to exit\n");
74 SDL_Delay(5 * 1000);
75 alive = 0;
76 quit(0);
77}
#define SDL_Delay
#define SDL_Log
static void quit(int rc)
Definition: testthread.c:27
static int alive
Definition: testthread.c:22

References alive, quit(), SDL_Delay, and SDL_Log.

Referenced by main().

◆ main()

int main ( int  argc,
char *  argv[] 
)

Definition at line 80 of file testthread.c.

81{
82 int arg = 1;
83 SDL_Thread *thread;
84
85 /* Enable standard application logging */
87
88 /* Load the SDL library */
89 if (SDL_Init(0) < 0) {
90 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
91 return (1);
92 }
93
94 while (argv[arg] && *argv[arg] == '-') {
95 if (SDL_strcmp(argv[arg], "--prio") == 0) {
96 testprio = 1;
97 }
98 ++arg;
99 }
100
101 tls = SDL_TLSCreate();
103 SDL_TLSSet(tls, "main thread", NULL);
104 SDL_Log("Main thread data initially: %s\n", (const char *)SDL_TLSGet(tls));
105
106 alive = 1;
107 thread = SDL_CreateThread(ThreadFunc, "One", "#1");
108 if (thread == NULL) {
109 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create thread: %s\n", SDL_GetError());
110 quit(1);
111 }
112 SDL_Delay(5 * 1000);
113 SDL_Log("Waiting for thread #1\n");
114 alive = 0;
115 SDL_WaitThread(thread, NULL);
116
117 SDL_Log("Main thread data finally: %s\n", (const char *)SDL_TLSGet(tls));
118
119 alive = 1;
120 signal(SIGTERM, killed);
121 thread = SDL_CreateThread(ThreadFunc, "Two", "#2");
122 if (thread == NULL) {
123 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create thread: %s\n", SDL_GetError());
124 quit(1);
125 }
126 raise(SIGTERM);
127
128 SDL_Quit(); /* Never reached */
129 return (0); /* Never reached */
130}
#define SDL_assert(condition)
Definition: SDL_assert.h:169
#define SDL_TLSCreate
#define SDL_GetError
#define SDL_TLSSet
#define SDL_CreateThread
#define SDL_TLSGet
#define SDL_LogSetPriority
#define SDL_LogError
#define SDL_strcmp
#define SDL_WaitThread
#define SDL_Quit
#define SDL_Init
@ SDL_LOG_PRIORITY_INFO
Definition: SDL_log.h:106
@ SDL_LOG_CATEGORY_APPLICATION
Definition: SDL_log.h:66
#define NULL
Definition: begin_code.h:167
static int testprio
Definition: testthread.c:23
static void killed(int sig)
Definition: testthread.c:71
static SDL_TLSID tls
Definition: testthread.c:21
int ThreadFunc(void *data)
Definition: testthread.c:48

References alive, killed(), NULL, quit(), SDL_assert, SDL_CreateThread, SDL_Delay, SDL_GetError, SDL_Init, SDL_Log, SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO, SDL_LogError, SDL_LogSetPriority, SDL_Quit, SDL_strcmp, SDL_TLSCreate, SDL_TLSGet, SDL_TLSSet, SDL_WaitThread, testprio, ThreadFunc(), and tls.

◆ quit()

static void quit ( int  rc)
static

Definition at line 27 of file testthread.c.

28{
29 SDL_Quit();
30 exit(rc);
31}

References SDL_Quit.

Referenced by killed(), and main().

◆ ThreadFunc()

int ThreadFunc ( void data)

Definition at line 48 of file testthread.c.

49{
51
52 SDL_TLSSet(tls, "baby thread", NULL);
53 SDL_Log("Started thread %s: My thread id is %lu, thread data = %s\n",
54 (char *) data, SDL_ThreadID(), (const char *)SDL_TLSGet(tls));
55 while (alive) {
56 SDL_Log("Thread '%s' is alive!\n", (char *) data);
57
58 if (testprio) {
59 SDL_Log("SDL_SetThreadPriority(%s):%d\n", getprioritystr(prio), SDL_SetThreadPriority(prio));
62 }
63
64 SDL_Delay(1 * 1000);
65 }
66 SDL_Log("Thread '%s' exiting!\n", (char *) data);
67 return (0);
68}
#define SDL_SetThreadPriority
#define SDL_ThreadID
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: SDL_opengl.h:1974
SDL_ThreadPriority
Definition: SDL_thread.h:59
static const char * getprioritystr(SDL_ThreadPriority priority)
Definition: testthread.c:34

References alive, getprioritystr(), NULL, SDL_Delay, SDL_Log, SDL_SetThreadPriority, SDL_THREAD_PRIORITY_LOW, SDL_THREAD_PRIORITY_NORMAL, SDL_THREAD_PRIORITY_TIME_CRITICAL, SDL_ThreadID, SDL_TLSGet, SDL_TLSSet, testprio, and tls.

Referenced by main().

Variable Documentation

◆ alive

int alive = 0
static

Definition at line 22 of file testthread.c.

Referenced by killed(), main(), and ThreadFunc().

◆ testprio

int testprio = 0
static

Definition at line 23 of file testthread.c.

Referenced by main(), and ThreadFunc().

◆ tls

SDL_TLSID tls
static

Definition at line 21 of file testthread.c.

Referenced by main(), and ThreadFunc().