Support default __stdcall calling convention (/Gz) on Windows

This commit is contained in:
Zach Hindes 2018-08-29 16:13:59 -05:00
parent 86234db095
commit f32703a7a1
3 changed files with 60 additions and 52 deletions

12
cJSON.c
View File

@ -119,22 +119,22 @@ static int case_insensitive_strcmp(const unsigned char *string1, const unsigned
typedef struct internal_hooks typedef struct internal_hooks
{ {
void *(*allocate)(size_t size); void *(CJSON_CDECL *allocate)(size_t size);
void (*deallocate)(void *pointer); void (CJSON_CDECL *deallocate)(void *pointer);
void *(*reallocate)(void *pointer, size_t size); void *(CJSON_CDECL *reallocate)(void *pointer, size_t size);
} internal_hooks; } internal_hooks;
#if defined(_MSC_VER) #if defined(_MSC_VER)
/* work around MSVC error C2322: '...' address of dillimport '...' is not static */ /* work around MSVC error C2322: '...' address of dillimport '...' is not static */
static void *internal_malloc(size_t size) static void * CJSON_CDECL internal_malloc(size_t size)
{ {
return malloc(size); return malloc(size);
} }
static void internal_free(void *pointer) static void CJSON_CDECL internal_free(void *pointer)
{ {
free(pointer); free(pointer);
} }
static void *internal_realloc(void *pointer, size_t size) static void * CJSON_CDECL internal_realloc(void *pointer, size_t size)
{ {
return realloc(pointer, size); return realloc(pointer, size);
} }

98
cJSON.h
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@ -28,6 +28,56 @@ extern "C"
{ {
#endif #endif
#if !defined(__WINDOWS__) && (defined(WIN32) || defined(WIN64) || defined(_MSC_VER) || defined(_WIN32))
#define __WINDOWS__
#endif
#ifdef __WINDOWS__
/* When compiling for windows, we specify a specific calling convention to avoid issues where we are being called from a project with a different default calling convention. For windows you have 3 define options:
CJSON_HIDE_SYMBOLS - Define this in the case where you don't want to ever dllexport symbols
CJSON_EXPORT_SYMBOLS - Define this on library build when you want to dllexport symbols (default)
CJSON_IMPORT_SYMBOLS - Define this if you want to dllimport symbol
For *nix builds that support visibility attribute, you can define similar behavior by
setting default visibility to hidden by adding
-fvisibility=hidden (for gcc)
or
-xldscope=hidden (for sun cc)
to CFLAGS
then using the CJSON_API_VISIBILITY flag to "export" the same symbols the way CJSON_EXPORT_SYMBOLS does
*/
#define CJSON_CDECL __cdecl
#define CJSON_STDCALL __stdcall
/* export symbols by default, this is necessary for copy pasting the C and header file */
#if !defined(CJSON_HIDE_SYMBOLS) && !defined(CJSON_IMPORT_SYMBOLS) && !defined(CJSON_EXPORT_SYMBOLS)
#define CJSON_EXPORT_SYMBOLS
#endif
#if defined(CJSON_HIDE_SYMBOLS)
#define CJSON_PUBLIC(type) type CJSON_STDCALL
#elif defined(CJSON_EXPORT_SYMBOLS)
#define CJSON_PUBLIC(type) __declspec(dllexport) type CJSON_STDCALL
#elif defined(CJSON_IMPORT_SYMBOLS)
#define CJSON_PUBLIC(type) __declspec(dllimport) type CJSON_STDCALL
#endif
#else /* !__WINDOWS__ */
#define CJSON_CDECL
#define CJSON_STDCALL
#if (defined(__GNUC__) || defined(__SUNPRO_CC) || defined (__SUNPRO_C)) && defined(CJSON_API_VISIBILITY)
#define CJSON_PUBLIC(type) __attribute__((visibility("default"))) type
#else
#define CJSON_PUBLIC(type) type
#endif
#endif
/* project version */ /* project version */
#define CJSON_VERSION_MAJOR 1 #define CJSON_VERSION_MAJOR 1
#define CJSON_VERSION_MINOR 7 #define CJSON_VERSION_MINOR 7
@ -74,55 +124,13 @@ typedef struct cJSON
typedef struct cJSON_Hooks typedef struct cJSON_Hooks
{ {
void *(*malloc_fn)(size_t sz); /* malloc/free are CDECL on Windows regardless of the default calling convention of the compiler, so ensure the hooks allow passing those functions directly. */
void (*free_fn)(void *ptr); void *(CJSON_CDECL *malloc_fn)(size_t sz);
void (CJSON_CDECL *free_fn)(void *ptr);
} cJSON_Hooks; } cJSON_Hooks;
typedef int cJSON_bool; typedef int cJSON_bool;
#if !defined(__WINDOWS__) && (defined(WIN32) || defined(WIN64) || defined(_MSC_VER) || defined(_WIN32))
#define __WINDOWS__
#endif
#ifdef __WINDOWS__
/* When compiling for windows, we specify a specific calling convention to avoid issues where we are being called from a project with a different default calling convention. For windows you have 2 define options:
CJSON_HIDE_SYMBOLS - Define this in the case where you don't want to ever dllexport symbols
CJSON_EXPORT_SYMBOLS - Define this on library build when you want to dllexport symbols (default)
CJSON_IMPORT_SYMBOLS - Define this if you want to dllimport symbol
For *nix builds that support visibility attribute, you can define similar behavior by
setting default visibility to hidden by adding
-fvisibility=hidden (for gcc)
or
-xldscope=hidden (for sun cc)
to CFLAGS
then using the CJSON_API_VISIBILITY flag to "export" the same symbols the way CJSON_EXPORT_SYMBOLS does
*/
/* export symbols by default, this is necessary for copy pasting the C and header file */
#if !defined(CJSON_HIDE_SYMBOLS) && !defined(CJSON_IMPORT_SYMBOLS) && !defined(CJSON_EXPORT_SYMBOLS)
#define CJSON_EXPORT_SYMBOLS
#endif
#if defined(CJSON_HIDE_SYMBOLS)
#define CJSON_PUBLIC(type) type __stdcall
#elif defined(CJSON_EXPORT_SYMBOLS)
#define CJSON_PUBLIC(type) __declspec(dllexport) type __stdcall
#elif defined(CJSON_IMPORT_SYMBOLS)
#define CJSON_PUBLIC(type) __declspec(dllimport) type __stdcall
#endif
#else /* !WIN32 */
#if (defined(__GNUC__) || defined(__SUNPRO_CC) || defined (__SUNPRO_C)) && defined(CJSON_API_VISIBILITY)
#define CJSON_PUBLIC(type) __attribute__((visibility("default"))) type
#else
#define CJSON_PUBLIC(type) type
#endif
#endif
/* Limits how deeply nested arrays/objects can be before cJSON rejects to parse them. /* Limits how deeply nested arrays/objects can be before cJSON rejects to parse them.
* This is to prevent stack overflows. */ * This is to prevent stack overflows. */
#ifndef CJSON_NESTING_LIMIT #ifndef CJSON_NESTING_LIMIT

2
test.c
View File

@ -256,7 +256,7 @@ static void create_objects(void)
cJSON_Delete(root); cJSON_Delete(root);
} }
int main(void) int CJSON_CDECL main(void)
{ {
/* print the version */ /* print the version */
printf("Version: %s\n", cJSON_Version()); printf("Version: %s\n", cJSON_Version());