bpo-32030: Add pymain_get_global_config() (#4735)
* Py_Main() now starts by reading Py_xxx configuration variables to only work on its own private structure, and then later writes back the configuration into these variables. * Replace Py_GETENV() with pymain_get_env_var() which ignores empty variables. * Add _PyCoreConfig.dump_refs * Add _PyCoreConfig.malloc_stats * _PyObject_DebugMallocStats() is now responsible to check if debug hooks are installed. The function returns 1 if stats were written, or 0 if the hooks are disabled. Mark _PyMem_PymallocEnabled() as static.
This commit is contained in:
parent
672b6baa71
commit
6bf992a1ac
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@ -109,7 +109,7 @@ PyAPI_FUNC(Py_ssize_t) _Py_GetAllocatedBlocks(void);
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/* Macros */
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#ifdef WITH_PYMALLOC
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#ifndef Py_LIMITED_API
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PyAPI_FUNC(void) _PyObject_DebugMallocStats(FILE *out);
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PyAPI_FUNC(int) _PyObject_DebugMallocStats(FILE *out);
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#endif /* #ifndef Py_LIMITED_API */
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#endif
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@ -24,10 +24,6 @@ PyAPI_FUNC(int) _PyMem_SetupAllocators(const char *opt);
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/* Try to get the allocators name set by _PyMem_SetupAllocators(). */
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PyAPI_FUNC(const char*) _PyMem_GetAllocatorsName(void);
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#ifdef WITH_PYMALLOC
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PyAPI_FUNC(int) _PyMem_PymallocEnabled(void);
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#endif
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/* Track an allocated memory block in the tracemalloc module.
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Return 0 on success, return -1 on error (failed to allocate memory to store
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the trace).
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@ -36,6 +36,8 @@ typedef struct {
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int import_time; /* -X importtime */
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int show_ref_count; /* -X showrefcount */
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int show_alloc_count; /* -X showalloccount */
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int dump_refs; /* PYTHONDUMPREFS */
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int malloc_stats; /* PYTHONMALLOCSTATS */
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} _PyCoreConfig;
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#define _PyCoreConfig_INIT (_PyCoreConfig){.use_hash_seed = -1}
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@ -111,7 +113,7 @@ typedef struct _is {
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PyObject *after_forkers_child;
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#endif
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} PyInterpreterState;
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#endif
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#endif /* !Py_LIMITED_API */
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/* State unique per thread */
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@ -133,7 +135,7 @@ typedef int (*Py_tracefunc)(PyObject *, struct _frame *, int, PyObject *);
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#define PyTrace_C_EXCEPTION 5
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#define PyTrace_C_RETURN 6
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#define PyTrace_OPCODE 7
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#endif
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#endif /* Py_LIMITED_API */
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#ifdef Py_LIMITED_API
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typedef struct _ts PyThreadState;
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@ -238,7 +240,7 @@ typedef struct _ts {
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/* XXX signal handlers should also be here */
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} PyThreadState;
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#endif
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#endif /* !Py_LIMITED_API */
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PyAPI_FUNC(PyInterpreterState *) PyInterpreterState_New(void);
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@ -363,7 +365,7 @@ PyAPI_FUNC(int) PyGILState_Check(void);
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Return NULL before _PyGILState_Init() is called and after _PyGILState_Fini()
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is called. */
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PyAPI_FUNC(PyInterpreterState *) _PyGILState_GetInterpreterStateUnsafe(void);
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#endif
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#endif /* !Py_LIMITED_API */
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/* The implementation of sys._current_frames() Returns a dict mapping
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168
Modules/main.c
168
Modules/main.c
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@ -162,8 +162,8 @@ pymain_get_env_var(const char *name)
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static void
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pymain_run_startup(PyCompilerFlags *cf)
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{
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char *startup = Py_GETENV("PYTHONSTARTUP");
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if (startup == NULL || startup[0] == '\0') {
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char *startup = pymain_get_env_var("PYTHONSTARTUP");
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if (startup == NULL) {
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return;
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}
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@ -377,23 +377,28 @@ typedef struct {
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wchar_t *command; /* -c argument */
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wchar_t *module; /* -m argument */
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_Py_OptList warning_options; /* -W options */
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PyObject *extra_options; /* -X options */
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int print_help; /* -h, -? options */
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int print_version; /* -V option */
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int bytes_warning; /* Py_BytesWarningFlag */
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int debug; /* Py_DebugFlag */
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int inspect; /* Py_InspectFlag */
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int interactive; /* Py_InteractiveFlag */
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int isolated; /* Py_IsolatedFlag */
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int optimization_level; /* Py_OptimizeFlag */
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int dont_write_bytecode; /* Py_DontWriteBytecodeFlag */
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int no_user_site_directory; /* Py_NoUserSiteDirectory */
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int no_site_import; /* Py_NoSiteFlag */
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int use_unbuffered_io; /* Py_UnbufferedStdioFlag */
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int verbosity; /* Py_VerboseFlag */
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int quiet_flag; /* Py_QuietFlag */
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int bytes_warning; /* Py_BytesWarningFlag, -b */
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int debug; /* Py_DebugFlag, -b, PYTHONDEBUG */
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int inspect; /* Py_InspectFlag, -i, PYTHONINSPECT */
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int interactive; /* Py_InteractiveFlag, -i */
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int isolated; /* Py_IsolatedFlag, -I */
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int optimization_level; /* Py_OptimizeFlag, -O, PYTHONOPTIMIZE */
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int dont_write_bytecode; /* Py_DontWriteBytecodeFlag, -B, PYTHONDONTWRITEBYTECODE */
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int no_user_site_directory; /* Py_NoUserSiteDirectory, -I, -s, PYTHONNOUSERSITE */
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int no_site_import; /* Py_NoSiteFlag, -S */
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int use_unbuffered_io; /* Py_UnbufferedStdioFlag, -u, PYTHONUNBUFFERED */
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int verbosity; /* Py_VerboseFlag, -v, PYTHONVERBOSE */
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int quiet_flag; /* Py_QuietFlag, -q */
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int skip_first_line; /* -x option */
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_Py_OptList xoptions; /* -X options */
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#ifdef MS_WINDOWS
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int legacy_windows_fs_encoding; /* Py_LegacyWindowsFSEncodingFlag,
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PYTHONLEGACYWINDOWSFSENCODING */
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int legacy_windows_stdio; /* Py_LegacyWindowsStdioFlag,
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PYTHONLEGACYWINDOWSSTDIO */
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#endif
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} _Py_CommandLineDetails;
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/* Structure used by Py_Main() to pass data to subfunctions */
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@ -695,19 +700,6 @@ pymain_parse_cmdline_impl(_PyMain *pymain)
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}
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static void
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maybe_set_flag(int *flag, int value)
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{
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/* Helper to set flag variables from command line options
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* - uses the higher of the two values if they're both set
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* - otherwise leaves the flag unset
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*/
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if (*flag < value) {
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*flag = value;
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}
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}
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static int
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pymain_add_xoptions(_PyMain *pymain)
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{
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@ -790,9 +782,8 @@ pymain_warnings_envvar(_PyMain *pymain)
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PyMem_RawFree(buf);
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}
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#else
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char *p;
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if ((p = Py_GETENV("PYTHONWARNINGS")) && *p != '\0') {
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char *p = pymain_get_env_var("PYTHONWARNINGS");
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if (p != NULL) {
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char *buf, *oldloc;
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/* settle for strtok here as there's no one standard
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@ -885,7 +876,6 @@ config_get_program_name(_PyMainInterpreterConfig *config)
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}
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#ifdef __APPLE__
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char *p;
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/* On MacOS X, when the Python interpreter is embedded in an
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application bundle, it gets executed by a bootstrapping script
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that does os.execve() with an argv[0] that's different from the
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@ -895,7 +885,8 @@ config_get_program_name(_PyMainInterpreterConfig *config)
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so the actual executable path is passed in an environment variable.
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See Lib/plat-mac/bundlebuiler.py for details about the bootstrap
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script. */
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if ((p = Py_GETENV("PYTHONEXECUTABLE")) && *p != '\0') {
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char *p = pymain_get_env_var("PYTHONEXECUTABLE");
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if (p != NULL) {
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size_t len;
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wchar_t* program_name = Py_DecodeLocale(p, &len);
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if (program_name == NULL) {
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@ -1015,25 +1006,76 @@ pymain_set_argv(_PyMain *pymain)
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}
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static void
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pymain_get_flag(int flag, int *value)
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{
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if (flag) {
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*value = flag;
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}
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}
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static void
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pymain_set_flag(int *flag, int value)
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{
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/* Helper to set flag variables from command line options
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* - uses the higher of the two values if they're both set
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* - otherwise leaves the flag unset
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*/
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if (*flag < value) {
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*flag = value;
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}
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}
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/* Get Py_xxx global configuration variables */
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static void
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pymain_get_global_config(_PyMain *pymain)
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{
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_Py_CommandLineDetails *cmdline = &pymain->cmdline;
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pymain_get_flag(Py_BytesWarningFlag, &cmdline->bytes_warning);
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pymain_get_flag(Py_DebugFlag, &cmdline->debug);
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pymain_get_flag(Py_InspectFlag, &cmdline->inspect);
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pymain_get_flag(Py_InteractiveFlag, &cmdline->interactive);
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pymain_get_flag(Py_IsolatedFlag, &cmdline->isolated);
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pymain_get_flag(Py_OptimizeFlag, &cmdline->optimization_level);
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pymain_get_flag(Py_DontWriteBytecodeFlag, &cmdline->dont_write_bytecode);
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pymain_get_flag(Py_NoUserSiteDirectory, &cmdline->no_user_site_directory);
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pymain_get_flag(Py_NoSiteFlag, &cmdline->no_site_import);
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pymain_get_flag(Py_UnbufferedStdioFlag, &cmdline->use_unbuffered_io);
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pymain_get_flag(Py_VerboseFlag, &cmdline->verbosity);
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pymain_get_flag(Py_QuietFlag, &cmdline->quiet_flag);
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#ifdef MS_WINDOWS
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pymain_get_flag(Py_LegacyWindowsFSEncodingFlag, &cmdline->legacy_windows_fs_encoding);
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pymain_get_flag(Py_LegacyWindowsStdioFlag, &cmdline->legacy_windows_stdio);
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#endif
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pymain_get_flag(Py_IgnoreEnvironmentFlag, &pymain->core_config.ignore_environment);
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}
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/* Set Py_XXX global configuration variables */
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static void
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pymain_set_global_config(_PyMain *pymain)
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{
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_Py_CommandLineDetails *cmdline = &pymain->cmdline;
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maybe_set_flag(&Py_BytesWarningFlag, cmdline->bytes_warning);
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maybe_set_flag(&Py_DebugFlag, cmdline->debug);
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maybe_set_flag(&Py_InspectFlag, cmdline->inspect);
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maybe_set_flag(&Py_InteractiveFlag, cmdline->interactive);
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maybe_set_flag(&Py_IsolatedFlag, cmdline->isolated);
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maybe_set_flag(&Py_OptimizeFlag, cmdline->optimization_level);
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maybe_set_flag(&Py_DontWriteBytecodeFlag, cmdline->dont_write_bytecode);
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maybe_set_flag(&Py_NoUserSiteDirectory, cmdline->no_user_site_directory);
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maybe_set_flag(&Py_NoSiteFlag, cmdline->no_site_import);
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maybe_set_flag(&Py_UnbufferedStdioFlag, cmdline->use_unbuffered_io);
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maybe_set_flag(&Py_VerboseFlag, cmdline->verbosity);
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maybe_set_flag(&Py_QuietFlag, cmdline->quiet_flag);
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pymain_set_flag(&Py_BytesWarningFlag, cmdline->bytes_warning);
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pymain_set_flag(&Py_DebugFlag, cmdline->debug);
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pymain_set_flag(&Py_InspectFlag, cmdline->inspect);
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pymain_set_flag(&Py_InteractiveFlag, cmdline->interactive);
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pymain_set_flag(&Py_IsolatedFlag, cmdline->isolated);
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pymain_set_flag(&Py_OptimizeFlag, cmdline->optimization_level);
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pymain_set_flag(&Py_DontWriteBytecodeFlag, cmdline->dont_write_bytecode);
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pymain_set_flag(&Py_NoUserSiteDirectory, cmdline->no_user_site_directory);
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pymain_set_flag(&Py_NoSiteFlag, cmdline->no_site_import);
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pymain_set_flag(&Py_UnbufferedStdioFlag, cmdline->use_unbuffered_io);
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pymain_set_flag(&Py_VerboseFlag, cmdline->verbosity);
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pymain_set_flag(&Py_QuietFlag, cmdline->quiet_flag);
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#ifdef MS_WINDOWS
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pymain_set_flag(&Py_LegacyWindowsFSEncodingFlag, cmdline->legacy_windows_fs_encoding);
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pymain_set_flag(&Py_LegacyWindowsStdioFlag, cmdline->legacy_windows_stdio);
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#endif
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maybe_set_flag(&Py_IgnoreEnvironmentFlag, pymain->core_config.ignore_environment);
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pymain_set_flag(&Py_IgnoreEnvironmentFlag, pymain->core_config.ignore_environment);
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}
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static void
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pymain_set_flags_from_env(_PyMain *pymain)
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{
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pymain_set_flag_from_env(&Py_DebugFlag,
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_Py_CommandLineDetails *cmdline = &pymain->cmdline;
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pymain_set_flag_from_env(&cmdline->debug,
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"PYTHONDEBUG");
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pymain_set_flag_from_env(&Py_VerboseFlag,
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pymain_set_flag_from_env(&cmdline->verbosity,
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"PYTHONVERBOSE");
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pymain_set_flag_from_env(&Py_OptimizeFlag,
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pymain_set_flag_from_env(&cmdline->optimization_level,
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"PYTHONOPTIMIZE");
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pymain_set_flag_from_env(&Py_InspectFlag,
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pymain_set_flag_from_env(&cmdline->inspect,
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"PYTHONINSPECT");
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pymain_set_flag_from_env(&Py_DontWriteBytecodeFlag,
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pymain_set_flag_from_env(&cmdline->dont_write_bytecode,
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"PYTHONDONTWRITEBYTECODE");
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pymain_set_flag_from_env(&Py_NoUserSiteDirectory,
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pymain_set_flag_from_env(&cmdline->no_user_site_directory,
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"PYTHONNOUSERSITE");
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pymain_set_flag_from_env(&Py_UnbufferedStdioFlag,
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pymain_set_flag_from_env(&cmdline->use_unbuffered_io,
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"PYTHONUNBUFFERED");
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#ifdef MS_WINDOWS
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pymain_set_flag_from_env(&Py_LegacyWindowsFSEncodingFlag,
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pymain_set_flag_from_env(&cmdline->legacy_windows_fs_encoding,
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"PYTHONLEGACYWINDOWSFSENCODING");
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pymain_set_flag_from_env(&Py_LegacyWindowsStdioFlag,
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pymain_set_flag_from_env(&cmdline->legacy_windows_stdio,
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"PYTHONLEGACYWINDOWSSTDIO");
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#endif
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}
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return -1;
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}
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core_config->allocator = Py_GETENV("PYTHONMALLOC");
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core_config->allocator = pymain_get_env_var("PYTHONMALLOC");
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/* -X options */
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if (pymain_get_xoption(pymain, L"showrefcount")) {
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core_config->faulthandler = 1;
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core_config->allocator = "debug";
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}
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if (pymain_get_env_var("PYTHONDUMPREFS")) {
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pymain->core_config.dump_refs = 1;
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}
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if (pymain_get_env_var("PYTHONMALLOCSTATS")) {
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pymain->core_config.malloc_stats = 1;
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}
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return 0;
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}
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return 1;
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}
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/* Set Py_IgnoreEnvironmentFlag needed by Py_GETENV() */
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pymain_set_global_config(pymain);
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if (pymain_parse_envvars(pymain) < 0) {
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static int
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pymain_init_python(_PyMain *pymain)
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{
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pymain_set_global_config(pymain);
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pymain_init_stdio(pymain);
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pymain->err = _Py_InitializeCore(&pymain->core_config);
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return -1;
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}
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pymain_get_global_config(pymain);
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res = pymain_parse_cmdline_envvars(pymain);
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if (res < 0) {
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return -1;
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@ -379,7 +379,7 @@ _PyMem_DebugEnabled(void)
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return (_PyObject.malloc == _PyMem_DebugMalloc);
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}
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int
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static int
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_PyMem_PymallocEnabled(void)
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{
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if (_PyMem_DebugEnabled()) {
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/* Print summary info to "out" about the state of pymalloc's structures.
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* In Py_DEBUG mode, also perform some expensive internal consistency
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* checks.
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*
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* Return 0 if the memory debug hooks are not installed or no statistics was
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* writen into out, return 1 otherwise.
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*/
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void
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int
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_PyObject_DebugMallocStats(FILE *out)
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{
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if (!_PyMem_PymallocEnabled()) {
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return 0;
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}
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uint i;
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const uint numclasses = SMALL_REQUEST_THRESHOLD >> ALIGNMENT_SHIFT;
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/* # of pools, allocated blocks, and free blocks per class index */
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total += printone(out, "# bytes lost to quantization", quantization);
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total += printone(out, "# bytes lost to arena alignment", arena_alignment);
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(void)printone(out, "Total", total);
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return 1;
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}
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#endif /* #ifdef WITH_PYMALLOC */
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@ -1103,6 +1103,10 @@ Py_FinalizeEx(void)
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tstate = PyThreadState_GET();
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interp = tstate->interp;
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/* Copy the core config to be able to use it even
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after PyInterpreterState_Delete() */
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_PyCoreConfig core_config = interp->core_config;
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/* Remaining threads (e.g. daemon threads) will automatically exit
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after taking the GIL (in PyEval_RestoreThread()). */
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_PyRuntime.finalizing = tstate;
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||||
|
@ -1186,7 +1190,7 @@ Py_FinalizeEx(void)
|
|||
_PyHash_Fini();
|
||||
|
||||
#ifdef Py_REF_DEBUG
|
||||
if (interp->core_config.show_ref_count) {
|
||||
if (core_config.show_ref_count) {
|
||||
_PyDebug_PrintTotalRefs();
|
||||
}
|
||||
#endif
|
||||
|
@ -1197,8 +1201,9 @@ Py_FinalizeEx(void)
|
|||
* Alas, a lot of stuff may still be alive now that will be cleaned
|
||||
* up later.
|
||||
*/
|
||||
if (Py_GETENV("PYTHONDUMPREFS"))
|
||||
if (core_config.dump_refs) {
|
||||
_Py_PrintReferences(stderr);
|
||||
}
|
||||
#endif /* Py_TRACE_REFS */
|
||||
|
||||
/* Clear interpreter state and all thread states. */
|
||||
|
@ -1260,14 +1265,13 @@ Py_FinalizeEx(void)
|
|||
* An address can be used to find the repr of the object, printed
|
||||
* above by _Py_PrintReferences.
|
||||
*/
|
||||
if (Py_GETENV("PYTHONDUMPREFS"))
|
||||
if (core_config.dump_refs) {
|
||||
_Py_PrintReferenceAddresses(stderr);
|
||||
}
|
||||
#endif /* Py_TRACE_REFS */
|
||||
#ifdef WITH_PYMALLOC
|
||||
if (_PyMem_PymallocEnabled()) {
|
||||
char *opt = Py_GETENV("PYTHONMALLOCSTATS");
|
||||
if (opt != NULL && *opt != '\0')
|
||||
_PyObject_DebugMallocStats(stderr);
|
||||
if (core_config.malloc_stats) {
|
||||
_PyObject_DebugMallocStats(stderr);
|
||||
}
|
||||
#endif
|
||||
|
||||
|
|
|
@ -1368,8 +1368,7 @@ static PyObject *
|
|||
sys_debugmallocstats(PyObject *self, PyObject *args)
|
||||
{
|
||||
#ifdef WITH_PYMALLOC
|
||||
if (_PyMem_PymallocEnabled()) {
|
||||
_PyObject_DebugMallocStats(stderr);
|
||||
if (_PyObject_DebugMallocStats(stderr)) {
|
||||
fputc('\n', stderr);
|
||||
}
|
||||
#endif
|
||||
|
|
Loading…
Reference in New Issue