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Introduction to Intel® Graphics Performance Analyzers
Game Optimization Methodology
Install and Launch Intel® GPA
Launch Application for Analysis
Configure Analysis Settings
Analyze Desktop Graphics Applications
Quick Start with Profiling Unreal Engine* Games
Instrumentation and Tracing Technology API Support
Intel® GPA Reference
Notices and Disclaimers
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Metadata API
Metadata is extra information, generic data which can be attached to a task, a thread, a process, etc. Metadata has a type, name, and value. The value encoding depends on a metadata type. It may contain either string data or a number of integer or floating point values.
To create metadata, use the following primitives:
void __itt_metadata_add(const __itt_domain *domain, __itt_id id, __itt_string_handle *key, __itt_metadata_type type, size_t count, void *data)
void __itt_metadata_str_addA(const __itt_domain *domain, __itt_id id, __itt_string_handle *key, const char *data, size_t length)
void __itt_metadata_str_addW(const __itt_domain *domain, __itt_id id, __itt_string_handle *key, const wchar_t *data, size_t length)
void __itt_metadata_add_with_scope(const __itt_domain *domain, __itt_scope scope, __itt_string_handle *key, __itt_metadata_type type, size_t count, void *data)
void __itt_metadata_str_add_with_scopeA(const __itt_domain *domain, __itt_scope scope, __itt_string_handle *key, const char *data, size_t length)
void __itt_metadata_str_add_with_scopeW(const __itt_domain *domain, __itt_scope scope, __itt_string_handle *key, const wchar_t *data, size_t length)
The following table defines the parameters used in the Metadata API primitives.
Type |
Parameter |
Description |
|---|---|---|
[in] |
__itt_domain* domain |
Metadata domain |
[in] |
__itt_scope scope |
Metadata scope: task, thread, process, and global. If a scope is undefined, metadata belongs to the last task in the thread. |
[in] |
__itt_string_handle* name |
Metadata name |
[in] |
__itt_metadata_type type |
Metadata type; used only for numeric metadata |
[in] |
size_t count |
Number of numeric metadata items [in] size_tlength |
[in] |
size_t length |
Number of symbols a metadata string |
[in] |
void *dataconst char *dataconst wchar_t *data |
Actual metadata (array of numerics or string) |