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a0773b89df
Statistics gathering is now off by default. Use the "-X pystats" command line option or set the new PYTHONSTATS environment variable to 1 to turn statistics gathering on at Python startup. Statistics are no longer dumped at exit if statistics gathering was off or statistics have been cleared. Changes: * Add PYTHONSTATS environment variable. * sys._stats_dump() now returns False if statistics are not dumped because they are all equal to zero. * Add PyConfig._pystats member. * Add tests on sys functions and on setting PyConfig._pystats to 1. * Add Include/cpython/pystats.h and Include/internal/pycore_pystats.h header files. * Rename '_py_stats' variable to '_Py_stats'. * Exclude Include/cpython/pystats.h from the Py_LIMITED_API. * Move pystats.h include from object.h to Python.h. * Add _Py_StatsOn() and _Py_StatsOff() functions. Remove '_py_stats_struct' variable from the API: make it static in specialize.c. * Document API in Include/pystats.h and Include/cpython/pystats.h. * Complete pystats documentation in Doc/using/configure.rst. * Don't write "all zeros" stats: if _stats_off() and _stats_clear() or _stats_dump() were called. * _PyEval_Fini() now always call _Py_PrintSpecializationStats() which does nothing if stats are all zeros. Co-authored-by: Michael Droettboom <mdboom@gmail.com>
26 lines
596 B
C
26 lines
596 B
C
// Statistics on Python performance (public API).
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//
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// Define _Py_INCREF_STAT_INC() and _Py_DECREF_STAT_INC() used by Py_INCREF()
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// and Py_DECREF().
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//
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// See Include/cpython/pystats.h for the full API.
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#ifndef Py_PYSTATS_H
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#define Py_PYSTATS_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if defined(Py_STATS) && !defined(Py_LIMITED_API)
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# define Py_CPYTHON_PYSTATS_H
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# include "cpython/pystats.h"
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# undef Py_CPYTHON_PYSTATS_H
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#else
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# define _Py_INCREF_STAT_INC() ((void)0)
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# define _Py_DECREF_STAT_INC() ((void)0)
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#endif // !Py_STATS
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#ifdef __cplusplus
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}
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#endif
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#endif // !Py_PYSTATS_H
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