SDL  2.0
Functions
SDL_systhread.cpp File Reference
#include "../../SDL_internal.h"
#include "SDL_thread.h"
#include "../SDL_thread_c.h"
#include "../SDL_systhread.h"
#include <mutex>
#include <thread>
#include <system_error>
+ Include dependency graph for SDL_systhread.cpp:

Go to the source code of this file.

Functions

static void RunThread (void *args)
 
int SDL_SYS_CreateThread (SDL_Thread *thread)
 
void SDL_SYS_SetupThread (const char *name)
 
SDL_threadID SDL_ThreadID (void)
 
int SDL_SYS_SetThreadPriority (SDL_ThreadPriority priority)
 
void SDL_SYS_WaitThread (SDL_Thread *thread)
 
void SDL_SYS_DetachThread (SDL_Thread *thread)
 
SDL_TLSData * SDL_SYS_GetTLSData (void)
 
int SDL_SYS_SetTLSData (SDL_TLSData *data)
 

Function Documentation

◆ RunThread()

static void RunThread ( void *  args)
static

Definition at line 40 of file SDL_systhread.cpp.

41 {
42  SDL_RunThread((SDL_Thread *) args);
43 }
SDL_RunThread
void SDL_RunThread(SDL_Thread *thread)
Definition: SDL_thread.c:261
SDL_Thread
Definition: SDL_thread_c.h:57

References SDL_RunThread().

Referenced by SDL_SYS_CreateThread().

◆ SDL_SYS_CreateThread()

int SDL_SYS_CreateThread ( SDL_Thread *  thread)

Definition at line 47 of file SDL_systhread.cpp.

48 {
49  try {
50  // !!! FIXME: no way to set a thread stack size here.
51  std::thread cpp_thread(RunThread, thread);
52  thread->handle = (void *) new std::thread(std::move(cpp_thread));
53  return 0;
54  } catch (std::system_error & ex) {
55  SDL_SetError("unable to start a C++ thread: code=%d; %s", ex.code(), ex.what());
56  return -1;
57  } catch (std::bad_alloc &) {
58  SDL_OutOfMemory();
59  return -1;
60  }
61 }
SDL_SetError
#define SDL_SetError
Definition: SDL_dynapi_overrides.h:30
SDL_OutOfMemory
#define SDL_OutOfMemory()
Definition: SDL_error.h:88
RunThread
static void RunThread(void *args)
Definition: SDL_systhread.cpp:40
SDL_Thread::handle
SYS_ThreadHandle handle
Definition: SDL_thread_c.h:59

References SDL_Thread::handle, RunThread(), SDL_OutOfMemory, and SDL_SetError.

◆ SDL_SYS_DetachThread()

void SDL_SYS_DetachThread ( SDL_Thread *  thread)

Definition at line 146 of file SDL_systhread.cpp.

147 {
148  if ( ! thread) {
149  return;
150  }
151 
152  try {
153  std::thread * cpp_thread = (std::thread *) thread->handle;
154  if (cpp_thread->joinable()) {
155  cpp_thread->detach();
156  }
157  } catch (std::system_error &) {
158  // An error occurred when detaching the thread. SDL_DetachThread does not,
159  // however, seem to provide a means to report errors to its callers
160  // though!
161  }
162 }
if
set set set set set set set macro pixldst1 abits if abits op else op endif endm macro pixldst2 abits if abits op else op endif endm macro pixldst4 abits if abits op else op endif endm macro pixldst0 abits op endm macro pixldst3 mem_operand op endm macro pixldst30 mem_operand op endm macro pixldst abits if abits elseif abits elseif abits elseif abits elseif abits pixldst0 abits else pixldst0 abits pixldst0 abits pixldst0 abits pixldst0 abits endif elseif abits else pixldst0 abits pixldst0 abits endif elseif abits else error unsupported bpp *numpix else pixst endif endm macro pixld1_s mem_operand if asr adds SRC_WIDTH_FIXED bpl add asl mov asr adds SRC_WIDTH_FIXED bpl add asl mov asr adds SRC_WIDTH_FIXED bpl add asl mov asr adds SRC_WIDTH_FIXED bpl add asl elseif asr adds SRC_WIDTH_FIXED bpl add asl mov asr adds SRC_WIDTH_FIXED bpl add asl else error unsupported endif endm macro pixld2_s mem_operand if mov asr add asl add asl mov asr sub UNIT_X add asl mov asr add asl add asl mov asr add UNIT_X add asl else pixld1_s mem_operand pixld1_s mem_operand endif endm macro pixld0_s mem_operand if asr adds SRC_WIDTH_FIXED bpl add asl elseif asr adds SRC_WIDTH_FIXED bpl add asl endif endm macro pixld_s_internal mem_operand if mem_operand pixld2_s mem_operand pixdeinterleave basereg elseif mem_operand elseif mem_operand elseif mem_operand elseif mem_operand pixld0_s mem_operand else pixld0_s mem_operand pixld0_s mem_operand pixld0_s mem_operand pixld0_s mem_operand endif elseif mem_operand else pixld0_s mem_operand pixld0_s mem_operand endif elseif mem_operand else error unsupported mem_operand if bpp mem_operand endif endm macro vuzp8 reg2 vuzp d d &reg2 endm macro vzip8 reg2 vzip d d &reg2 endm macro pixdeinterleave basereg basereg basereg basereg basereg endif endm macro pixinterleave basereg basereg basereg basereg basereg endif endm macro PF boost_increment endif if endif PF tst PF addne PF subne PF cmp ORIG_W if endif if endif if endif PF subge ORIG_W PF subges if endif if endif if endif endif endm macro cache_preload_simple endif if dst_r_bpp pld[DST_R, #(PREFETCH_DISTANCE_SIMPLE *dst_r_bpp/8)] endif if mask_bpp pld if[MASK, #(PREFETCH_DISTANCE_SIMPLE *mask_bpp/8)] endif endif endm macro fetch_mask_pixblock pixld mask_basereg pixblock_size MASK endm macro ensure_destination_ptr_alignment process_pixblock_tail_head if beq irp skip1(dst_w_bpp<=(lowbit *8)) &&((lowbit *8)<(pixblock_size *dst_w_bpp)) .if lowbit< 16 tst DST_R
Definition: pixman-arm-neon-asm.h:469

References SDL_Thread::handle, and if.

◆ SDL_SYS_GetTLSData()

SDL_TLSData* SDL_SYS_GetTLSData ( void  )

Definition at line 166 of file SDL_systhread.cpp.

167 {
168  return SDL_Generic_GetTLSData();
169 }
SDL_Generic_GetTLSData
SDL_TLSData * SDL_Generic_GetTLSData(void)
Definition: SDL_thread.c:123

References SDL_Generic_GetTLSData().

◆ SDL_SYS_SetThreadPriority()

int SDL_SYS_SetThreadPriority ( SDL_ThreadPriority  priority)

Definition at line 96 of file SDL_systhread.cpp.

97 {
98 #ifdef __WINRT__
99  int value;
100 
101  if (priority == SDL_THREAD_PRIORITY_LOW) {
102  value = THREAD_PRIORITY_LOWEST;
103  }
104  else if (priority == SDL_THREAD_PRIORITY_HIGH) {
105  value = THREAD_PRIORITY_HIGHEST;
106  }
107  else if (priority == SDL_THREAD_PRIORITY_TIME_CRITICAL) {
108  // FIXME: WinRT does not support TIME_CRITICAL! -flibit
109  SDL_LogWarn(SDL_LOG_CATEGORY_SYSTEM, "TIME_CRITICAL unsupported, falling back to HIGHEST");
110  value = THREAD_PRIORITY_HIGHEST;
111  }
112  else {
113  value = THREAD_PRIORITY_NORMAL;
114  }
115  if (!SetThreadPriority(GetCurrentThread(), value)) {
116  return WIN_SetError("SetThreadPriority()");
117  }
118  return 0;
119 #else
120  return SDL_Unsupported();
121 #endif
122 }
SDL_LogWarn
#define SDL_LogWarn
Definition: SDL_dynapi_overrides.h:35
SDL_Unsupported
#define SDL_Unsupported()
Definition: SDL_error.h:89
SDL_LOG_CATEGORY_SYSTEM
@ SDL_LOG_CATEGORY_SYSTEM
Definition: SDL_log.h:69
value
GLsizei const GLfloat * value
Definition: SDL_opengl_glext.h:701
SDL_THREAD_PRIORITY_TIME_CRITICAL
@ SDL_THREAD_PRIORITY_TIME_CRITICAL
Definition: SDL_thread.h:68
SDL_THREAD_PRIORITY_LOW
@ SDL_THREAD_PRIORITY_LOW
Definition: SDL_thread.h:65
SDL_THREAD_PRIORITY_HIGH
@ SDL_THREAD_PRIORITY_HIGH
Definition: SDL_thread.h:67
WIN_SetError
int WIN_SetError(const char *prefix)

References SDL_LOG_CATEGORY_SYSTEM, SDL_LogWarn, SDL_THREAD_PRIORITY_HIGH, SDL_THREAD_PRIORITY_LOW, SDL_THREAD_PRIORITY_TIME_CRITICAL, SDL_Unsupported, and WIN_SetError().

◆ SDL_SYS_SetTLSData()

int SDL_SYS_SetTLSData ( SDL_TLSData *  data)

Definition at line 173 of file SDL_systhread.cpp.

174 {
175  return SDL_Generic_SetTLSData(data);
176 }
data
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: SDL_opengl.h:1974
SDL_Generic_SetTLSData
int SDL_Generic_SetTLSData(SDL_TLSData *storage)
Definition: SDL_thread.c:162

References SDL_Generic_SetTLSData().

◆ SDL_SYS_SetupThread()

void SDL_SYS_SetupThread ( const char *  name)

Definition at line 65 of file SDL_systhread.cpp.

66 {
67  // Make sure a thread ID gets assigned ASAP, for debugging purposes:
68  SDL_ThreadID();
69  return;
70 }
SDL_ThreadID
SDL_threadID SDL_ThreadID(void)
Definition: SDL_systhread.cpp:74

References SDL_ThreadID().

◆ SDL_SYS_WaitThread()

void SDL_SYS_WaitThread ( SDL_Thread *  thread)

Definition at line 126 of file SDL_systhread.cpp.

127 {
128  if ( ! thread) {
129  return;
130  }
131 
132  try {
133  std::thread * cpp_thread = (std::thread *) thread->handle;
134  if (cpp_thread->joinable()) {
135  cpp_thread->join();
136  }
137  } catch (std::system_error &) {
138  // An error occurred when joining the thread. SDL_WaitThread does not,
139  // however, seem to provide a means to report errors to its callers
140  // though!
141  }
142 }

References SDL_Thread::handle, and if.

◆ SDL_ThreadID()

SDL_threadID SDL_ThreadID ( void  )

Get the thread identifier for the current thread.

Definition at line 74 of file SDL_systhread.cpp.

75 {
76 #ifdef __WINRT__
77  return GetCurrentThreadId();
78 #else
79  // HACK: Mimick a thread ID, if one isn't otherwise available.
80  static thread_local SDL_threadID current_thread_id = 0;
81  static SDL_threadID next_thread_id = 1;
82  static std::mutex next_thread_id_mutex;
83 
84  if (current_thread_id == 0) {
85  std::lock_guard<std::mutex> lock(next_thread_id_mutex);
86  current_thread_id = next_thread_id;
87  ++next_thread_id;
88  }
89 
90  return current_thread_id;
91 #endif
92 }
lock
SDL_mutex * lock
Definition: SDL_events.c:83
SDL_threadID
unsigned long SDL_threadID
Definition: SDL_thread.h:49
mutex
static SDL_mutex * mutex
Definition: testlock.c:23

References lock, and mutex.

Referenced by SDL_SYS_SetupThread().