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168 lines (132 loc) · 4.37 KB
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#ifndef Py_INTERNAL_TRACEMALLOC_H
#define Py_INTERNAL_TRACEMALLOC_H
#ifdef __cplusplus
extern "C" {
#endif
#ifndef Py_BUILD_CORE
# error "this header requires Py_BUILD_CORE define"
#endif
#include "pycore_hashtable.h" // _Py_hashtable_t
/* Trace memory blocks allocated by PyMem_RawMalloc() */
#define TRACE_RAW_MALLOC
struct _PyTraceMalloc_Config {
/* Module initialized?
Variable protected by the GIL */
enum {
TRACEMALLOC_NOT_INITIALIZED,
TRACEMALLOC_INITIALIZED,
TRACEMALLOC_FINALIZED
} initialized;
/* Is tracemalloc tracing memory allocations?
Variable protected by the GIL */
int tracing;
/* limit of the number of frames in a traceback, 1 by default.
Variable protected by the GIL. */
int max_nframe;
};
/* Pack the frame_t structure to reduce the memory footprint on 64-bit
architectures: 12 bytes instead of 16. */
#if defined(_MSC_VER)
#pragma pack(push, 4)
#endif
struct
#ifdef __GNUC__
__attribute__((packed))
#endif
tracemalloc_frame {
/* filename cannot be NULL: "<unknown>" is used if the Python frame
filename is NULL */
PyObject *filename;
unsigned int lineno;
};
#ifdef _MSC_VER
#pragma pack(pop)
#endif
struct tracemalloc_traceback {
Py_uhash_t hash;
/* Number of frames stored */
uint16_t nframe;
/* Total number of frames the traceback had */
uint16_t total_nframe;
struct tracemalloc_frame frames[1];
};
struct _tracemalloc_runtime_state {
struct _PyTraceMalloc_Config config;
/* Protected by the GIL */
struct {
PyMemAllocatorEx mem;
PyMemAllocatorEx raw;
PyMemAllocatorEx obj;
} allocators;
#if defined(TRACE_RAW_MALLOC)
PyThread_type_lock tables_lock;
#endif
/* Size in bytes of currently traced memory.
Protected by TABLES_LOCK(). */
size_t traced_memory;
/* Peak size in bytes of traced memory.
Protected by TABLES_LOCK(). */
size_t peak_traced_memory;
/* Hash table used as a set to intern filenames:
PyObject* => PyObject*.
Protected by the GIL */
_Py_hashtable_t *filenames;
/* Buffer to store a new traceback in traceback_new().
Protected by the GIL. */
struct tracemalloc_traceback *traceback;
/* Hash table used as a set to intern tracebacks:
traceback_t* => traceback_t*
Protected by the GIL */
_Py_hashtable_t *tracebacks;
/* pointer (void*) => trace (trace_t*).
Protected by TABLES_LOCK(). */
_Py_hashtable_t *traces;
/* domain (unsigned int) => traces (_Py_hashtable_t).
Protected by TABLES_LOCK(). */
_Py_hashtable_t *domains;
struct tracemalloc_traceback empty_traceback;
Py_tss_t reentrant_key;
};
#define _tracemalloc_runtime_state_INIT \
{ \
.config = { \
.initialized = TRACEMALLOC_NOT_INITIALIZED, \
.tracing = 0, \
.max_nframe = 1, \
}, \
.reentrant_key = Py_tss_NEEDS_INIT, \
}
/* Get the traceback where a memory block was allocated.
Return a tuple of (filename: str, lineno: int) tuples.
Return None if the tracemalloc module is disabled or if the memory block
is not tracked by tracemalloc.
Raise an exception and return NULL on error. */
PyAPI_FUNC(PyObject*) _PyTraceMalloc_GetTraceback(
unsigned int domain,
uintptr_t ptr);
/* Return non-zero if tracemalloc is tracing */
extern int _PyTraceMalloc_IsTracing(void);
/* Clear the tracemalloc traces */
extern void _PyTraceMalloc_ClearTraces(void);
/* Clear the tracemalloc traces */
extern PyObject* _PyTraceMalloc_GetTraces(void);
/* Clear tracemalloc traceback for an object */
extern PyObject* _PyTraceMalloc_GetObjectTraceback(PyObject *obj);
/* Initialize tracemalloc */
extern int _PyTraceMalloc_Init(void);
/* Start tracemalloc */
extern int _PyTraceMalloc_Start(int max_nframe);
/* Stop tracemalloc */
extern void _PyTraceMalloc_Stop(void);
/* Get the tracemalloc traceback limit */
extern int _PyTraceMalloc_GetTracebackLimit(void);
/* Get the memory usage of tracemalloc in bytes */
extern size_t _PyTraceMalloc_GetMemory(void);
/* Get the current size and peak size of traced memory blocks as a 2-tuple */
extern PyObject* _PyTraceMalloc_GetTracedMemory(void);
/* Set the peak size of traced memory blocks to the current size */
extern void _PyTraceMalloc_ResetPeak(void);
#ifdef __cplusplus
}
#endif
#endif // !Py_INTERNAL_TRACEMALLOC_H