| | |
| | | /* |
| | | Simple DirectMedia Layer |
| | | Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org> |
| | | Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org> |
| | | |
| | | This software is provided 'as-is', without any express or implied |
| | | warranty. In no event will the authors be held liable for any damages |
| | |
| | | 3. This notice may not be removed or altered from any source distribution. |
| | | */ |
| | | |
| | | #ifndef _SDL_assert_h |
| | | #define _SDL_assert_h |
| | | #ifndef SDL_assert_h_ |
| | | #define SDL_assert_h_ |
| | | |
| | | #include "SDL_config.h" |
| | | |
| | |
| | | /* Don't include intrin.h here because it contains C++ code */ |
| | | extern void __cdecl __debugbreak(void); |
| | | #define SDL_TriggerBreakpoint() __debugbreak() |
| | | #elif (defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))) |
| | | #elif ( (!defined(__NACL__)) && ((defined(__GNUC__) || defined(__clang__)) && (defined(__i386__) || defined(__x86_64__))) ) |
| | | #define SDL_TriggerBreakpoint() __asm__ __volatile__ ( "int $3\n\t" ) |
| | | #elif defined(HAVE_SIGNAL_H) |
| | | #elif ( defined(__APPLE__) && defined(__arm64__) ) /* this might work on other ARM targets, but this is a known quantity... */ |
| | | #define SDL_TriggerBreakpoint() __asm__ __volatile__ ( "brk #22\n\t" ) |
| | | #elif defined(__386__) && defined(__WATCOMC__) |
| | | #define SDL_TriggerBreakpoint() { _asm { int 0x03 } } |
| | | #elif defined(HAVE_SIGNAL_H) && !defined(__WATCOMC__) |
| | | #include <signal.h> |
| | | #define SDL_TriggerBreakpoint() raise(SIGTRAP) |
| | | #else |
| | |
| | | |
| | | #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 supports __func__ as a standard. */ |
| | | # define SDL_FUNCTION __func__ |
| | | #elif ((__GNUC__ >= 2) || defined(_MSC_VER)) |
| | | #elif ((__GNUC__ >= 2) || defined(_MSC_VER) || defined (__WATCOMC__)) |
| | | # define SDL_FUNCTION __FUNCTION__ |
| | | #else |
| | | # define SDL_FUNCTION "???" |
| | |
| | | disable assertions. |
| | | */ |
| | | |
| | | /* "while (0,0)" fools Microsoft's compiler's /W4 warning level into thinking |
| | | this condition isn't constant. And looks like an owl's face! */ |
| | | #ifdef _MSC_VER /* stupid /W4 warnings. */ |
| | | #define SDL_NULL_WHILE_LOOP_CONDITION (-1 == __LINE__) |
| | | #define SDL_NULL_WHILE_LOOP_CONDITION (0,0) |
| | | #else |
| | | #define SDL_NULL_WHILE_LOOP_CONDITION (0) |
| | | #endif |
| | |
| | | SDL_ASSERTION_ABORT, /**< Terminate the program. */ |
| | | SDL_ASSERTION_IGNORE, /**< Ignore the assert. */ |
| | | SDL_ASSERTION_ALWAYS_IGNORE /**< Ignore the assert from now on. */ |
| | | } SDL_assert_state; |
| | | } SDL_AssertState; |
| | | |
| | | typedef struct SDL_assert_data |
| | | typedef struct SDL_AssertData |
| | | { |
| | | int always_ignore; |
| | | unsigned int trigger_count; |
| | |
| | | const char *filename; |
| | | int linenum; |
| | | const char *function; |
| | | const struct SDL_assert_data *next; |
| | | } SDL_assert_data; |
| | | const struct SDL_AssertData *next; |
| | | } SDL_AssertData; |
| | | |
| | | #if (SDL_ASSERT_LEVEL > 0) |
| | | |
| | | /* Never call this directly. Use the SDL_assert* macros. */ |
| | | extern DECLSPEC SDL_assert_state SDLCALL SDL_ReportAssertion(SDL_assert_data *, |
| | | extern DECLSPEC SDL_AssertState SDLCALL SDL_ReportAssertion(SDL_AssertData *, |
| | | const char *, |
| | | const char *, int); |
| | | const char *, int) |
| | | #if defined(__clang__) |
| | | #if __has_feature(attribute_analyzer_noreturn) |
| | | /* this tells Clang's static analysis that we're a custom assert function, |
| | | and that the analyzer should assume the condition was always true past this |
| | | SDL_assert test. */ |
| | | __attribute__((analyzer_noreturn)) |
| | | #endif |
| | | #endif |
| | | ; |
| | | |
| | | /* the do {} while(0) avoids dangling else problems: |
| | | if (x) SDL_assert(y); else blah(); |
| | |
| | | #define SDL_enabled_assert(condition) \ |
| | | do { \ |
| | | while ( !(condition) ) { \ |
| | | static struct SDL_assert_data assert_data = { \ |
| | | static struct SDL_AssertData sdl_assert_data = { \ |
| | | 0, 0, #condition, 0, 0, 0, 0 \ |
| | | }; \ |
| | | const SDL_assert_state state = SDL_ReportAssertion(&assert_data, \ |
| | | SDL_FUNCTION, \ |
| | | SDL_FILE, \ |
| | | SDL_LINE); \ |
| | | if (state == SDL_ASSERTION_RETRY) { \ |
| | | const SDL_AssertState sdl_assert_state = SDL_ReportAssertion(&sdl_assert_data, SDL_FUNCTION, SDL_FILE, SDL_LINE); \ |
| | | if (sdl_assert_state == SDL_ASSERTION_RETRY) { \ |
| | | continue; /* go again. */ \ |
| | | } else if (state == SDL_ASSERTION_BREAK) { \ |
| | | } else if (sdl_assert_state == SDL_ASSERTION_BREAK) { \ |
| | | SDL_TriggerBreakpoint(); \ |
| | | } \ |
| | | break; /* not retrying. */ \ |
| | |
| | | #define SDL_assert_always(condition) SDL_enabled_assert(condition) |
| | | |
| | | |
| | | typedef SDL_assert_state (SDLCALL *SDL_AssertionHandler)( |
| | | const SDL_assert_data* data, void* userdata); |
| | | typedef SDL_AssertState (SDLCALL *SDL_AssertionHandler)( |
| | | const SDL_AssertData* data, void* userdata); |
| | | |
| | | /** |
| | | * \brief Set an application-defined assertion handler. |
| | |
| | | * |
| | | * This callback is NOT reset to SDL's internal handler upon SDL_Quit()! |
| | | * |
| | | * \return SDL_assert_state value of how to handle the assertion failure. |
| | | * Return SDL_AssertState value of how to handle the assertion failure. |
| | | * |
| | | * \param handler Callback function, called when an assertion fails. |
| | | * \param userdata A pointer passed to the callback as-is. |
| | |
| | | extern DECLSPEC void SDLCALL SDL_SetAssertionHandler( |
| | | SDL_AssertionHandler handler, |
| | | void *userdata); |
| | | |
| | | /** |
| | | * \brief Get the default assertion handler. |
| | | * |
| | | * This returns the function pointer that is called by default when an |
| | | * assertion is triggered. This is an internal function provided by SDL, |
| | | * that is used for assertions when SDL_SetAssertionHandler() hasn't been |
| | | * used to provide a different function. |
| | | * |
| | | * \return The default SDL_AssertionHandler that is called when an assert triggers. |
| | | */ |
| | | extern DECLSPEC SDL_AssertionHandler SDLCALL SDL_GetDefaultAssertionHandler(void); |
| | | |
| | | /** |
| | | * \brief Get the current assertion handler. |
| | | * |
| | | * This returns the function pointer that is called when an assertion is |
| | | * triggered. This is either the value last passed to |
| | | * SDL_SetAssertionHandler(), or if no application-specified function is |
| | | * set, is equivalent to calling SDL_GetDefaultAssertionHandler(). |
| | | * |
| | | * \param puserdata Pointer to a void*, which will store the "userdata" |
| | | * pointer that was passed to SDL_SetAssertionHandler(). |
| | | * This value will always be NULL for the default handler. |
| | | * If you don't care about this data, it is safe to pass |
| | | * a NULL pointer to this function to ignore it. |
| | | * \return The SDL_AssertionHandler that is called when an assert triggers. |
| | | */ |
| | | extern DECLSPEC SDL_AssertionHandler SDLCALL SDL_GetAssertionHandler(void **puserdata); |
| | | |
| | | /** |
| | | * \brief Get a list of all assertion failures. |
| | |
| | | * The proper way to examine this data looks something like this: |
| | | * |
| | | * <code> |
| | | * const SDL_assert_data *item = SDL_GetAssertionReport(); |
| | | * const SDL_AssertData *item = SDL_GetAssertionReport(); |
| | | * while (item) { |
| | | * printf("'%s', %s (%s:%d), triggered %u times, always ignore: %s.\n", |
| | | * printf("'%s', %s (%s:%d), triggered %u times, always ignore: %s.\\n", |
| | | * item->condition, item->function, item->filename, |
| | | * item->linenum, item->trigger_count, |
| | | * item->always_ignore ? "yes" : "no"); |
| | |
| | | * \return List of all assertions. |
| | | * \sa SDL_ResetAssertionReport |
| | | */ |
| | | extern DECLSPEC const SDL_assert_data * SDLCALL SDL_GetAssertionReport(void); |
| | | extern DECLSPEC const SDL_AssertData * SDLCALL SDL_GetAssertionReport(void); |
| | | |
| | | /** |
| | | * \brief Reset the list of all assertion failures. |
| | |
| | | */ |
| | | extern DECLSPEC void SDLCALL SDL_ResetAssertionReport(void); |
| | | |
| | | |
| | | /* these had wrong naming conventions until 2.0.4. Please update your app! */ |
| | | #define SDL_assert_state SDL_AssertState |
| | | #define SDL_assert_data SDL_AssertData |
| | | |
| | | |
| | | /* Ends C function definitions when using C++ */ |
| | | #ifdef __cplusplus |
| | | } |
| | | #endif |
| | | #include "close_code.h" |
| | | |
| | | #endif /* _SDL_assert_h */ |
| | | #endif /* SDL_assert_h_ */ |
| | | |
| | | /* vi: set ts=4 sw=4 expandtab: */ |