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samples: Print verbose error messages to stderr (#7795)

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* samples: Print verbose error messages to stderr

Printing error root cause is crucial for efficient debugging.
Moreover `stderr` may have different formatting in comparison
to `stdout` which improves readability.

Signed-off-by: Karol Trzcinski <karolx.trzcinski@intel.com>

* fix code style pre-commit check

Co-authored-by: Vladimir Dudnik <vladimir.dudnik@intel.com>
This commit is contained in:
Karol Trzciński
2021-11-10 11:42:52 +03:00
committed by GitHub
co-authored by Vladimir Dudnik
parent 41f7893ae8
commit 76994c6ec9
3 changed files with 144 additions and 54 deletions
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samples/c/hello_classification/main.c
+30 -10
View File
@@ -122,15 +122,19 @@ int main(int argc, char** argv) {
// -------------------------------------
IEStatusCode status = ie_core_create("", &core);
if (status != OK)
if (status != OK) {
fprintf(stderr, "ERROR ie_core_create status %d, line %d\n", status, __LINE__);
goto err;
}
// -----------------------------------------------------------------------------------------------------
// Step 2. Read a model in OpenVINO Intermediate Representation (.xml and .bin
// files) or ONNX (.onnx file) format
status = ie_core_read_network(core, input_model, NULL, &network);
if (status != OK)
if (status != OK) {
fprintf(stderr, "ERROR ie_core_read_network status %d, line %d\n", status, __LINE__);
goto err;
}
// check the network topology
status = ie_network_get_inputs_number(network, &network_input_size);
if (status != OK || network_input_size != 1) {
@@ -140,7 +144,7 @@ int main(int argc, char** argv) {
status = ie_network_get_outputs_number(network, &network_output_size);
if (status != OK || network_output_size != 1) {
printf("Sample supports topologies with 1 output only\n");
fprintf(stderr, "Sample supports topologies with 1 output only\n");
goto err;
}
// -----------------------------------------------------------------------------------------------------
@@ -151,8 +155,10 @@ int main(int argc, char** argv) {
// -----------------------------------------------------
status = ie_network_get_input_name(network, 0, &input_name);
if (status != OK)
if (status != OK) {
fprintf(stderr, "ERROR ie_network_get_input_name status %d, line %d\n", status, __LINE__);
goto err;
}
/* Mark input as resizable by setting of a resize algorithm.
* In this case we will be able to set an input blob of any shape to an infer
* request. Resize and layout conversions are executed automatically during
@@ -160,15 +166,19 @@ int main(int argc, char** argv) {
status |= ie_network_set_input_resize_algorithm(network, input_name, RESIZE_BILINEAR);
status |= ie_network_set_input_layout(network, input_name, NHWC);
status |= ie_network_set_input_precision(network, input_name, U8);
if (status != OK)
if (status != OK) {
fprintf(stderr, "ERROR ie_network_set_input_* status %d, line %d\n", status, __LINE__);
goto err;
}
// --------------------------- Prepare output blobs
// ----------------------------------------------------
status |= ie_network_get_output_name(network, 0, &output_name);
status |= ie_network_set_output_precision(network, output_name, FP32);
if (status != OK)
if (status != OK) {
fprintf(stderr, "ERROR ie_network_get_output_* status %d, line %d\n", status, __LINE__);
goto err;
}
// -----------------------------------------------------------------------------------------------------
@@ -176,15 +186,19 @@ int main(int argc, char** argv) {
// ------------------------------------------
ie_config_t config = {NULL, NULL, NULL};
status = ie_core_load_network(core, network, device_name, &config, &exe_network);
if (status != OK)
if (status != OK) {
fprintf(stderr, "ERROR ie_core_load_network status %d, line %d\n", status, __LINE__);
goto err;
}
// -----------------------------------------------------------------------------------------------------
// --------------------------- Step 5. Create infer request
// -------------------------------------------------
status = ie_exec_network_create_infer_request(exe_network, &infer_request);
if (status != OK)
if (status != OK) {
fprintf(stderr, "ERROR ie_exec_network_create_infer_request status %d, line %d\n", status, __LINE__);
goto err;
}
// -----------------------------------------------------------------------------------------------------
// --------------------------- Step 6. Prepare input
@@ -201,28 +215,34 @@ int main(int argc, char** argv) {
// memory
status = ie_blob_make_memory_from_preallocated(&tensorDesc, img.mat_data, size, &imgBlob);
if (status != OK) {
fprintf(stderr, "ERROR ie_blob_make_memory_from_preallocated status %d, line %d\n", status, __LINE__);
image_free(&img);
goto err;
}
// infer_request accepts input blob of any size
status = ie_infer_request_set_blob(infer_request, input_name, imgBlob);
if (status != OK)
if (status != OK) {
fprintf(stderr, "ERROR ie_infer_request_set_blob status %d, line %d\n", status, __LINE__);
goto err;
}
// -----------------------------------------------------------------------------------------------------
// --------------------------- Step 7. Do inference
// --------------------------------------------------------
/* Running the request synchronously */
status = ie_infer_request_infer(infer_request);
if (status != OK)
if (status != OK) {
fprintf(stderr, "ERROR ie_infer_request_infer status %d, line %d\n", status, __LINE__);
goto err;
}
// -----------------------------------------------------------------------------------------------------
// --------------------------- Step 8. Process output
// ------------------------------------------------------
status = ie_infer_request_get_blob(infer_request, output_name, &output_blob);
if (status != OK) {
fprintf(stderr, "ERROR ie_infer_request_get_blob status %d, line %d\n", status, __LINE__);
image_free(&img);
goto err;
}