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)
 
int ThreadFunc (void *data)
 
static void killed (int sig)
 
int main (int argc, char *argv[])
 

Variables

static SDL_TLSID tls
 
static int alive = 0
 

Function Documentation

◆ killed()

static void killed ( int  sig)
static

Definition at line 47 of file testthread.c.

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

Referenced by main().

48 {
49  SDL_Log("Killed with SIGTERM, waiting 5 seconds to exit\n");
50  SDL_Delay(5 * 1000);
51  alive = 0;
52  quit(0);
53 }
#define SDL_Log
static int alive
Definition: testthread.c:22
#define SDL_Delay
static void quit(int rc)
Definition: testthread.c:26

◆ main()

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

Definition at line 56 of file testthread.c.

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_TLSCreate, SDL_TLSGet, SDL_TLSSet, SDL_WaitThread, ThreadFunc(), and tls.

57 {
58  SDL_Thread *thread;
59 
60  /* Enable standard application logging */
62 
63  /* Load the SDL library */
64  if (SDL_Init(0) < 0) {
65  SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
66  return (1);
67  }
68 
69  tls = SDL_TLSCreate();
70  SDL_assert(tls);
71  SDL_TLSSet(tls, "main thread", NULL);
72  SDL_Log("Main thread data initially: %s\n", (const char *)SDL_TLSGet(tls));
73 
74  alive = 1;
75  thread = SDL_CreateThread(ThreadFunc, "One", "#1");
76  if (thread == NULL) {
77  SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create thread: %s\n", SDL_GetError());
78  quit(1);
79  }
80  SDL_Delay(5 * 1000);
81  SDL_Log("Waiting for thread #1\n");
82  alive = 0;
83  SDL_WaitThread(thread, NULL);
84 
85  SDL_Log("Main thread data finally: %s\n", (const char *)SDL_TLSGet(tls));
86 
87  alive = 1;
88  signal(SIGTERM, killed);
89  thread = SDL_CreateThread(ThreadFunc, "Two", "#2");
90  if (thread == NULL) {
91  SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create thread: %s\n", SDL_GetError());
92  quit(1);
93  }
94  raise(SIGTERM);
95 
96  SDL_Quit(); /* Never reached */
97  return (0); /* Never reached */
98 }
#define SDL_TLSSet
int ThreadFunc(void *data)
Definition: testthread.c:33
#define SDL_GetError
static void killed(int sig)
Definition: testthread.c:47
#define SDL_LogError
#define SDL_Log
#define SDL_Quit
#define SDL_TLSCreate
static int alive
Definition: testthread.c:22
#define SDL_CreateThread
#define SDL_Delay
#define SDL_TLSGet
#define SDL_assert(condition)
Definition: SDL_assert.h:169
#define SDL_LogSetPriority
#define NULL
Definition: begin_code.h:164
static SDL_TLSID tls
Definition: testthread.c:21
static void quit(int rc)
Definition: testthread.c:26
#define SDL_Init
#define SDL_WaitThread

◆ quit()

static void quit ( int  rc)
static

Definition at line 26 of file testthread.c.

References SDL_Quit, and SDLCALL.

Referenced by killed(), and main().

27 {
28  SDL_Quit();
29  exit(rc);
30 }
#define SDL_Quit

◆ ThreadFunc()

int ThreadFunc ( void data)

Definition at line 33 of file testthread.c.

References alive, NULL, SDL_Delay, SDL_Log, SDL_ThreadID, SDL_TLSGet, SDL_TLSSet, and tls.

Referenced by main().

34 {
35  SDL_TLSSet(tls, "baby thread", NULL);
36  SDL_Log("Started thread %s: My thread id is %lu, thread data = %s\n",
37  (char *) data, SDL_ThreadID(), (const char *)SDL_TLSGet(tls));
38  while (alive) {
39  SDL_Log("Thread '%s' is alive!\n", (char *) data);
40  SDL_Delay(1 * 1000);
41  }
42  SDL_Log("Thread '%s' exiting!\n", (char *) data);
43  return (0);
44 }
#define SDL_TLSSet
#define SDL_ThreadID
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: SDL_opengl.h:1974
#define SDL_Log
static int alive
Definition: testthread.c:22
#define SDL_Delay
#define SDL_TLSGet
#define NULL
Definition: begin_code.h:164
static SDL_TLSID tls
Definition: testthread.c:21

Variable Documentation

◆ alive

int alive = 0
static

Definition at line 22 of file testthread.c.

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

◆ tls

SDL_TLSID tls
static

Definition at line 21 of file testthread.c.

Referenced by main(), and ThreadFunc().