8000 [3.10] bpo-32280: Store _PyRuntime in a named section (GH-4802) by miss-islington · Pull Request #27448 · python/cpython · GitHub
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[3.10] bpo-32280: Store _PyRuntime in a named section (GH-4802) #27448

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Merged
merged 1 commit into from
Jul 29, 2021
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[3.10] bpo-32280: Store _PyRuntime in a named section (GH-4802) #27448

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30 changes: 28 additions & 2 deletions Python/pylifecycle.c
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,10 @@

#include <locale.h> // setlocale()

#if defined(__APPLE__)
#include <mach-o/loader.h>
#endif

#ifdef HAVE_SIGNAL_H
# include <signal.h> // SIG_IGN
#endif
Expand All @@ -34,7 +38,6 @@
(PyObject_TypeCheck((op), &PyWindowsConsoleIO_Type))
#endif


#define PUTS(fd, str) _Py_write_noraise(fd, str, (int)strlen(str))


Expand All @@ -59,7 +62,30 @@ static void wait_for_thread_shutdown(PyThreadState *tstate);
static void call_ll_exitfuncs(_PyRuntimeState *runtime);

int _Py_UnhandledKeyboardInterrupt = 0;
_PyRuntimeState _PyRuntime = _PyRuntimeState_INIT;

/* The following places the `_PyRuntime` structure in a location that can be
* found without any external information. This is meant to ease access to the
* interpreter state for various runtime debugging tools, but is *not* an
* officially supported feature */

#if defined(MS_WINDOWS)

#pragma section("PyRuntime", read, write)
__declspec(allocate("PyRuntime"))

#elif defined(__APPLE__)

__attribute__((
section(SEG_DATA ",PyRuntime")
))

#endif

_PyRuntimeState _PyRuntime
#if defined(__linux__) && (defined(__GNUC__) || defined(__clang__))
__attribute__ ((section (".PyRuntime")))
#endif
= _PyRuntimeState_INIT;
static int runtime_initialized = 0;

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0