1e41f4b71Sopenharmony_ci# hidebug.h 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci 4e41f4b71Sopenharmony_ci## Overview 5e41f4b71Sopenharmony_ci 6e41f4b71Sopenharmony_ciDefines the functions for debugging. 7e41f4b71Sopenharmony_ci 8e41f4b71Sopenharmony_ci**Library**: libohhidebug.so 9e41f4b71Sopenharmony_ci 10e41f4b71Sopenharmony_ci**System capability**: SystemCapability.HiviewDFX.HiProfiler.HiDebug 11e41f4b71Sopenharmony_ci 12e41f4b71Sopenharmony_ci**Since**: 12 13e41f4b71Sopenharmony_ci 14e41f4b71Sopenharmony_ci**Related module**: [HiDebug](_hi_debug.md) 15e41f4b71Sopenharmony_ci 16e41f4b71Sopenharmony_ci 17e41f4b71Sopenharmony_ci## Summary 18e41f4b71Sopenharmony_ci 19e41f4b71Sopenharmony_ci 20e41f4b71Sopenharmony_ci### Function 21e41f4b71Sopenharmony_ci 22e41f4b71Sopenharmony_ci| Name| Description| 23e41f4b71Sopenharmony_ci| -------- | -------- | 24e41f4b71Sopenharmony_ci| double [OH_HiDebug_GetSystemCpuUsage](_hi_debug.md#oh_hidebug_getsystemcpuusage) () | Obtains the CPU usage of the system. | 25e41f4b71Sopenharmony_ci| double [OH_HiDebug_GetAppCpuUsage](_hi_debug.md#oh_hidebug_getappcpuusage) () | Obtains the CPU usage of an application. | 26e41f4b71Sopenharmony_ci| [HiDebug_ThreadCpuUsagePtr](_hi_debug.md#hidebug_threadcpuusageptr) [OH_HiDebug_GetAppThreadCpuUsage](_hi_debug.md#oh_hidebug_getappthreadcpuusage) () | Obtains the CPU usage of all threads of an application. | 27e41f4b71Sopenharmony_ci| void [OH_HiDebug_FreeThreadCpuUsage](_hi_debug.md#oh_hidebug_freethreadcpuusage) ([HiDebug_ThreadCpuUsagePtr](_hi_debug.md#hidebug_threadcpuusageptr) \*threadCpuUsage) | Releases the thread data struct. | 28e41f4b71Sopenharmony_ci| void [OH_HiDebug_GetSystemMemInfo](_hi_debug.md#oh_hidebug_getsystemmeminfo) ([HiDebug_SystemMemInfo](_hi_debug___system_mem_info.md) \*systemMemInfo) | Obtains system memory information. | 29e41f4b71Sopenharmony_ci| void [OH_HiDebug_GetAppNativeMemInfo](_hi_debug.md#oh_hidebug_getappnativememinfo) ([HiDebug_NativeMemInfo](_hi_debug___native_mem_info.md) \*nativeMemInfo) | Obtains the memory information of an application. | 30e41f4b71Sopenharmony_ci| void [OH_HiDebug_GetAppMemoryLimit](_hi_debug.md#oh_hidebug_getappmemorylimit) ([HiDebug_MemoryLimit](_hi_debug___memory_limit.md) \*memoryLimit) | Obtains the memory limit of an application. | 31e41f4b71Sopenharmony_ci| [HiDebug_ErrorCode](_hi_debug.md#hidebug_errorcode) [OH_HiDebug_StartAppTraceCapture](_hi_debug.md#oh_hidebug_startapptracecapture) ([HiDebug_TraceFlag](_hi_debug.md#hidebug_traceflag) flag, uint64_t tags, uint32_t limitSize, char \*fileName, uint32_t length) | Starts tracing of an application. | 32e41f4b71Sopenharmony_ci| [HiDebug_ErrorCode](_hi_debug.md#hidebug_errorcode) [OH_HiDebug_StopAppTraceCapture](_hi_debug.md#oh_hidebug_stopapptracecapture) () | Stops application tracing. | 33