C++ FFI_FN函数代码示例

本文整理汇总了C++中FFI_FN函数的典型用法代码示例。如果您正苦于以下问题：C++ FFI_FN函数的具体用法？C++ FFI_FN怎么用？C++ FFI_FN使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了FFI_FN函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: main

int main (void)
{
  ffi_cif cif;
  ffi_type *args[MAX_ARGS];
  void *values[MAX_ARGS];
  ffi_arg rint;
  char *s;

  args[0] = &ffi_type_pointer;
  values[0] = (void*) &s;
  
  /* Initialize the cif */
  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1, 
		     &ffi_type_sint, args) == FFI_OK);
  
  s = "a";
  ffi_call(&cif, FFI_FN(my_strlen), &rint, values);
  CHECK(rint == 1);
  
  s = "1234567";
  ffi_call(&cif, FFI_FN(my_strlen), &rint, values);
  CHECK(rint == 7);
  
  s = "1234567890123456789012345";
  ffi_call(&cif, FFI_FN(my_strlen), &rint, values);
  CHECK(rint == 25);
  
  exit (0);
}

开发者ID:Rocket-Buddha，项目名称:GameCode4，代码行数:29，代码来源:strlen.c

示例2: main

int main (void)
{
  ffi_cif cif;
  ffi_type *args[MAX_ARGS];
  void *values[MAX_ARGS];
  ffi_arg rint;
  char *s;
  float v2;
  args[0] = &ffi_type_pointer;
  args[1] = &ffi_type_float;
  values[0] = (void*) &s;
  values[1] = (void*) &v2;
  
  /* Initialize the cif */
  CHECK(ffi_prep_cif(&cif, ABI_NUM, 2,
		       &ffi_type_sint, args) == FFI_OK);
  
  s = "a";
  v2 = 0.0;
  ffi_call(&cif, FFI_FN(my_f), &rint, values);
  CHECK(rint == 1);
  
  s = "1234567";
  v2 = -1.0;
  ffi_call(&cif, FFI_FN(my_f), &rint, values);
  CHECK(rint == 6);
  
  s = "1234567890123456789012345";
  v2 = 1.0;
  ffi_call(&cif, FFI_FN(my_f), &rint, values);
  CHECK(rint == 26);
  
  exit(0);
}

开发者ID:0-wiz-0，项目名称:libffi，代码行数:34，代码来源:strlen2.c

示例3: main

int main (void)
{
  ffi_cif cif;
  ffi_type *args[MAX_ARGS];
  void *values[MAX_ARGS];
  double rd;

  float f;
  double d;
  long double ld;

  args[0] = &ffi_type_float;
  values[0] = &f;
  args[1] = &ffi_type_double;
  values[1] = &d;
  args[2] = &ffi_type_longdouble;
  values[2] = &ld;

  /* Initialize the cif */
  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 3,
		     &ffi_type_double, args) == FFI_OK);

  f = 3.14159;
  d = (double)1.0/(double)3.0;
  ld = 2.71828182846L;

  floating_1 (f, d, ld);

  ffi_call(&cif, FFI_FN(floating_1), &rd, values);

  CHECK(fabs(rd - floating_1(f, d, ld)) < DBL_EPSILON);

  args[0] = &ffi_type_longdouble;
  values[0] = &ld;
  args[1] = &ffi_type_double;
  values[1] = &d;
  args[2] = &ffi_type_float;
  values[2] = &f;

  /* Initialize the cif */
  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 3,
		     &ffi_type_double, args) == FFI_OK);

  floating_2 (ld, d, f);

  ffi_call(&cif, FFI_FN(floating_2), &rd, values);

  CHECK(fabs(rd - floating_2(ld, d, f)) < DBL_EPSILON);

  exit (0);
}

开发者ID:0-wiz-0，项目名称:libffi，代码行数:51，代码来源:float3.c

示例4: invokeArray

static void
invokeArray(JNIEnv* env, jlong ctxAddress, jbyteArray paramBuffer, void* returnBuffer)
{
    Function* ctx = (Function *) j2p(ctxAddress);
    union { double d; long long ll; jbyte tmp[PARAM_SIZE]; } tmpStackBuffer[MAX_STACK_ARGS];
    jbyte *tmpBuffer = (jbyte *) &tmpStackBuffer[0];
    
    if (ctx->cif.nargs > 0) {
        if (ctx->cif.bytes > (int) sizeof(tmpStackBuffer)) {
            tmpBuffer = alloca_aligned(ctx->cif.bytes, MIN_ALIGN);
        }

        // calculate room needed for return address for struct returns
        int adj = ctx->cif.rtype->type == FFI_TYPE_STRUCT ? sizeof(void *) : 0;

        (*env)->GetByteArrayRegion(env, paramBuffer, 0, ctx->rawParameterSize, tmpBuffer + adj);
    }

    // For struct return values, we need to push a return value address on the parameter stack
    if (ctx->cif.rtype->type == FFI_TYPE_STRUCT) {
        *(void **) tmpBuffer = returnBuffer;
    }

    ffi_raw_call(&ctx->cif, FFI_FN(ctx->function), returnBuffer, (ffi_raw *) tmpBuffer);
    set_last_error(errno);
}

开发者ID:mallampatisuresh，项目名称:Glassfish，代码行数:26，代码来源:Invoke.c

示例5: main

int main (void)
{
  ffi_cif cif;
  ffi_type *args[MAX_ARGS];
  void *values[MAX_ARGS];
  float fl1, fl2, fl4, rfl;
  unsigned int in3;
  args[0] = &ffi_type_float;
  args[1] = &ffi_type_float;
  args[2] = &ffi_type_uint;
  args[3] = &ffi_type_float;
  values[0] = &fl1;
  values[1] = &fl2;
  values[2] = &in3;
  values[3] = &fl4;

  /* Initialize the cif */
  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 4,
		     &ffi_type_float, args) == FFI_OK);
  fl1 = 127.0;
  fl2 = 128.0;
  in3 = 255;
  fl4 = 512.7;

  ffi_call(&cif, FFI_FN(return_fl), &rfl, values);
  printf ("%f vs %f\n", rfl, return_fl(fl1, fl2, in3, fl4));
  CHECK(rfl ==  fl1 + fl2 + in3 + fl4);
  exit(0);
}

开发者ID:Rocket-Buddha，项目名称:GameCode4，代码行数:29，代码来源:return_fl3.c

示例6: main

int main(void)
{
  ffi_cif cif;
  ffi_type *args[4] = {
    &ffi_type_sint,
    &ffi_type_double,
    &ffi_type_sint,
    &ffi_type_double
  };
  double fa[2] = {1,2};
  int ia[2] = {1,2};
  void *values[4] = {&ia[0], &fa[0], &ia[1], &fa[1]};
  float f, ff;

  /* Initialize the cif */
  CHECK(ffi_prep_cif(&cif, ABI_NUM, 4,
		     &ffi_type_float, args) == FFI_OK);

  ff = align_arguments(ia[0], fa[0], ia[1], fa[1]);;

  ffi_call(&cif, FFI_FN(align_arguments), &f, values);

  if (f == ff)
    printf("align arguments tests ok!\n");
  else
    CHECK(0);
  exit(0);
}

开发者ID:MichaelTien8901，项目名称:michaeltien8901.github.io，代码行数:28，代码来源:align_stdcall.c

示例7: Java_com_kenai_jffi_Foreign_invokeArrayReturnStruct

/*
 * Class:     com_kenai_jffi_Foreign
 * Method:    invokeArrayReturnStruct
 * Signature: (J[B[B)V
 */
JNIEXPORT void JNICALL
Java_com_kenai_jffi_Foreign_invokeArrayReturnStruct(JNIEnv* env, jclass self, jlong ctxAddress,
        jbyteArray paramBuffer, jbyteArray returnBuffer, jint offset)
{
    Function* ctx = (Function *) j2p(ctxAddress);
    jbyte* retval = alloca(ctx->cif.rtype->size);
    jbyte* tmpBuffer;
    void** ffiArgs;
    int i;

    //
    // Due to the undocumented and somewhat strange struct-return handling when
    // using ffi_raw_call(), we convert from raw to ptr array, then call via normal
    // ffi_call
    //

    ffiArgs = alloca(ctx->cif.nargs * sizeof(void *));

#ifdef USE_RAW
    tmpBuffer = alloca(ctx->rawParameterSize);
    (*env)->GetByteArrayRegion(env, paramBuffer, 0, ctx->rawParameterSize, tmpBuffer);
    for (i = 0; i < (int) ctx->cif.nargs; ++i) {
        ffiArgs[i] = (tmpBuffer + ctx->rawParamOffsets[i]);
    }
#else
    tmpBuffer = alloca(ctx->cif.nargs * PARAM_SIZE);
    (*env)->GetByteArrayRegion(env, paramBuffer, 0, ctx->cif.nargs * PARAM_SIZE, tmpBuffer);
    for (i = 0; i < (int) ctx->cif.nargs; ++i) {
        ffiArgs[i] = &tmpBuffer[i * PARAM_SIZE];
    }
#endif
    ffi_call(&ctx->cif, FFI_FN(ctx->function), retval, ffiArgs);
    SAVE_ERRNO(ctx);
    (*env)->SetByteArrayRegion(env, returnBuffer, offset, ctx->cif.rtype->size, retval);
}

开发者ID:Flameeyes，项目名称:jffi，代码行数:40，代码来源:Invoke.c

示例8: main

int main (void)
{
  ffi_cif cif;
  ffi_type *args[MAX_ARGS];
  void *values[MAX_ARGS];
  ffi_arg res;
  unsigned long ul1, ul2;

  args[0] = &ffi_type_ulong;
  args[1] = &ffi_type_ulong;
  values[0] = &ul1;
  values[1] = &ul2;

  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2,
		     &ffi_type_ulong, args) == FFI_OK);

  ul1 = 1073741823L;
  ul2 = 1073741824L;

  ffi_call(&cif, FFI_FN(return_ul), &res, values);
  printf("res: %lu, %lu\n", (unsigned long)res, ul1 + ul2);
  /* { dg-output "res: 2147483647, 2147483647" } */

  exit(0);
}

开发者ID:0-wiz-0，项目名称:libffi，代码行数:25，代码来源:return_ul.c

示例9: main

int main (void)
{
  ffi_cif cif;
  ffi_type *args[MAX_ARGS];
  void *values[MAX_ARGS];
  ffi_arg rint;
  short us;
  short us2;
  unsigned long ul = 0;

  args[0] = &ffi_type_ushort;
  args[1] = &ffi_type_ushort;
  values[0] = &us;
  values[1] = &us2;
  
  /* Initialize the cif */
  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, 
		     &ffi_type_uint, args) == FFI_OK);
  
  for (us = 55; us < 30000; us+=1034) {
    for (us2 = 100; us2 < 30000; us2+=1945) {
      ffi_call(&cif, FFI_FN(promotion), &rint, values);
      CHECK((unsigned int)rint == (us << 16 | us2));
    }
  }
  printf("%lu promotion2 tests run\n", ul);
  exit(0); 
}

开发者ID:BMXE，项目名称:music-player，代码行数:28，代码来源:promotion2.c

示例10: main

int main (void)
{
  ffi_cif cif;
  ffi_type *args[MAX_ARGS];
  void *values[MAX_ARGS];
  ffi_arg res;
  unsigned long l1, l2;

  args[0] = &ffi_type_slong;
  args[1] = &ffi_type_slong;
  values[0] = &l1;
  values[1] = &l2;

  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2,
		     &ffi_type_slong, args) == FFI_OK);

  l1 = 1073741823L;
  l2 = 1073741824L;

  ffi_call(&cif, FFI_FN(return_sl), &res, values);
  printf("res: %ld, %ld\n", (long)res, l1 - l2);
  /* { dg-output "res: -1, -1" } */

  exit(0);
}

开发者ID:Rocket-Buddha，项目名称:GameCode4，代码行数:25，代码来源:return_sl.c

示例11: main

int main (void)
{
  ffi_cif cif;
  ffi_type *args[13];
  void *values[13];
  float fa[13];
  float f, ff;
  int i;

  for (i = 0; i < 13; i++)
    {
      args[i] = &ffi_type_float;
      values[i] = &fa[i];
      fa[i] = (float) i;
    }

    /* Initialize the cif */
    CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 13, 
		       &ffi_type_float, args) == FFI_OK);

    ffi_call(&cif, FFI_FN(many), &f, values);

    ff =  many(fa[0], fa[1],
	       fa[2], fa[3],
	       fa[4], fa[5],
	       fa[6], fa[7],
	       fa[8], fa[9],
	       fa[10],fa[11],fa[12]);

    if (fabs(f - ff) < FLT_EPSILON)
      exit(0);
    else
      abort();
}

开发者ID:JensTimmerman，项目名称:libffi，代码行数:34，代码来源:many.c

示例12: main

int main (void)
{
  ffi_cif cif;
  ffi_type *args[MAX_ARGS];
  void *values[MAX_ARGS];
  ffi_arg rint;
  signed char sc;
  unsigned long ul;

  args[0] = &ffi_type_schar;
  values[0] = &sc;
  
  /* Initialize the cif */
  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1, 
		     &ffi_type_schar, args) == FFI_OK);
  
  for (sc = (signed char) -127; 
       sc < (signed char) 127; sc++)
    {
      ul++;
      ffi_call(&cif, FFI_FN(return_sc), &rint, values);
      CHECK(rint == (ffi_arg) sc);
    }
  exit(0);
}

开发者ID:MatthiasWM，项目名称:Einstein，代码行数:25，代码来源:return_sc.c

示例13: invokeArray

static void
invokeArray(JNIEnv* env, jlong ctxAddress, jbyteArray paramBuffer, void* returnBuffer)
{
    Function* ctx = (Function *) j2p(ctxAddress);

    void** ffiArgs = { NULL };
    jbyte *tmpBuffer = NULL;
    
    if (ctx->cif.nargs > 0) {
        unsigned int i;
        tmpBuffer = alloca(ctx->cif.nargs * PARAM_SIZE);
        ffiArgs = alloca(ctx->cif.nargs * sizeof(void *));
        
        (*env)->GetByteArrayRegion(env, paramBuffer, 0, ctx->cif.nargs * PARAM_SIZE, tmpBuffer);

        for (i = 0; i < ctx->cif.nargs; ++i) {
            if (unlikely(ctx->cif.arg_types[i]->type == FFI_TYPE_STRUCT)) {
                ffiArgs[i] = *(void **) &tmpBuffer[i * PARAM_SIZE];
            } else {
                ffiArgs[i] = &tmpBuffer[i * PARAM_SIZE];
            }
        }
    }

    ffi_call(&ctx->cif, FFI_FN(ctx->function), returnBuffer, ffiArgs);

    SAVE_ERRNO(ctx);
}

开发者ID:Flameeyes，项目名称:jffi，代码行数:28，代码来源:Invoke.c

示例14: mrb_digest_hmac_hexdigest

static mrb_value
mrb_digest_hmac_hexdigest(mrb_state *mrb, mrb_value self) {
  mrb_digest *digest;
  void *ctx_tmp;
  unsigned char md[MRB_DIGEST_AVAILABLE_SIZ];
  size_t md_len;
  char hex[MRB_HEXDIGEST_AVAILABLE_SIZ];

  digest = mrb_get_datatype(mrb, self, &mrb_hmac_type);
  if (digest == NULL) {
    mrb_raise(mrb, E_ARGUMENT_ERROR, "invalid argument");
  }

  ctx_tmp = malloc(digest->ctx_size);
  if (ctx_tmp == NULL) {
    mrb_raise(mrb, E_RUNTIME_ERROR, "cannot allocate memory");
  }
  memcpy(ctx_tmp, digest->ctx, digest->ctx_size);

  md_len = 0L;
  call_hmac_final(mrb, FFI_FN(digest->func_final), ctx_tmp, md, &md_len);

  free(ctx_tmp);

  return mrb_str_new(mrb, (const char *)digest2hex(hex, md, md_len), md_len * 2);
}

开发者ID:qtkmz，项目名称:mruby-digest-ffi，代码行数:26，代码来源:mrb_digest_ffi.c

示例15: __tgt_rtl_run_target_team_region

int32_t __tgt_rtl_run_target_team_region(int32_t device_id, void *tgt_entry_ptr,
    void **tgt_args, int32_t arg_num, int32_t team_num, int32_t thread_limit,
    uint64_t loop_tripcount /*not used*/) {
  // ignore team num and thread limit.

  // Use libffi to launch execution.
  ffi_cif cif;

  // All args are references.
  std::vector<ffi_type *> args_types(arg_num, &ffi_type_pointer);
  std::vector<void *> args(arg_num);

  for (int32_t i = 0; i < arg_num; ++i)
    args[i] = &tgt_args[i];

  ffi_status status = ffi_prep_cif(&cif, FFI_DEFAULT_ABI, arg_num,
                                   &ffi_type_void, &args_types[0]);

  assert(status == FFI_OK && "Unable to prepare target launch!");

  if (status != FFI_OK)
    return OFFLOAD_FAIL;

  DP("Running entry point at " DPxMOD "...\n", DPxPTR(tgt_entry_ptr));

  ffi_call(&cif, FFI_FN(tgt_entry_ptr), NULL, &args[0]);
  return OFFLOAD_SUCCESS;
}

开发者ID:clang-ykt，项目名称:openmp，代码行数:28，代码来源:rtl.cpp

注：本文中的FFI_FN函数示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。