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denoland-deno/test_napi/module.c
Bartek Iwańczuk 512d5337c4
fix(napi): clear currently registering module slot (#19249)
This commit fixes problem with loading N-API modules that use 
the "old" way of registration (using "napi_module_register" API).
The slot was not cleared after loading modules, causing subsequent
calls that use the new way of registration (using 
"napi_register_module_v1" API) to try and load the previous module.

Ref https://github.com/denoland/deno/issues/16460

---------

Co-authored-by: Divy Srivastava <dj.srivastava23@gmail.com>
2023-05-26 10:10:17 +05:30

68 lines
3.1 KiB
C

typedef struct napi_module {
int nm_version;
unsigned int nm_flags;
const char* nm_filename;
void* nm_register_func;
const char* nm_modname;
void* nm_priv;
void* reserved[4];
} napi_module;
#ifdef _WIN32
#define NAPI_EXTERN __declspec(dllexport)
#define NAPI_CDECL __cdecl
#else
#define NAPI_EXTERN __attribute__((visibility("default")))
#define NAPI_CDECL
#endif
NAPI_EXTERN void NAPI_CDECL
napi_module_register(napi_module* mod);
#if defined(_MSC_VER)
#if defined(__cplusplus)
#define NAPI_C_CTOR(fn) \
static void NAPI_CDECL fn(void); \
namespace { \
struct fn##_ { \
fn##_() { fn(); } \
} fn##_v_; \
} \
static void NAPI_CDECL fn(void)
#else // !defined(__cplusplus)
#pragma section(".CRT$XCU", read)
// The NAPI_C_CTOR macro defines a function fn that is called during CRT
// initialization.
// C does not support dynamic initialization of static variables and this code
// simulates C++ behavior. Exporting the function pointer prevents it from being
// optimized. See for details:
// https://docs.microsoft.com/en-us/cpp/c-runtime-library/crt-initialization?view=msvc-170
#define NAPI_C_CTOR(fn) \
static void NAPI_CDECL fn(void); \
__declspec(dllexport, allocate(".CRT$XCU")) void(NAPI_CDECL * fn##_)(void) = \
fn; \
static void NAPI_CDECL fn(void)
#endif // defined(__cplusplus)
#else
#define NAPI_C_CTOR(fn) \
static void fn(void) __attribute__((constructor)); \
static void fn(void)
#endif
#define NAPI_MODULE_TEST(modname, regfunc) \
static napi_module _module = { \
1, \
0, \
__FILE__, \
regfunc, \
#modname, \
0, \
{0}, \
}; \
NAPI_C_CTOR(_register_##modname) { napi_module_register(&_module); } \
void* init(void* env __attribute__((unused)), void* exports) {
return exports;
}
NAPI_MODULE_TEST(TEST_NAPI_MODULE_NAME, init)