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134 lines
3.8 KiB
C
134 lines
3.8 KiB
C
#ifndef Py_INTERNAL_CEVAL_STATE_H
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#define Py_INTERNAL_CEVAL_STATE_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef Py_BUILD_CORE
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# error "this header requires Py_BUILD_CORE define"
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#endif
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#include "pycore_lock.h" // PyMutex
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#include "pycore_gil.h" // struct _gil_runtime_state
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typedef int (*_Py_pending_call_func)(void *);
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struct _pending_call {
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_Py_pending_call_func func;
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void *arg;
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int flags;
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};
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#define PENDINGCALLSARRAYSIZE 300
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#define MAXPENDINGCALLS PENDINGCALLSARRAYSIZE
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/* For interpreter-level pending calls, we want to avoid spending too
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much time on pending calls in any one thread, so we apply a limit. */
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#if MAXPENDINGCALLS > 100
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# define MAXPENDINGCALLSLOOP 100
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#else
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# define MAXPENDINGCALLSLOOP MAXPENDINGCALLS
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#endif
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/* We keep the number small to preserve as much compatibility
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as possible with earlier versions. */
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#define MAXPENDINGCALLS_MAIN 32
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/* For the main thread, we want to make sure all pending calls are
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run at once, for the sake of prompt signal handling. This is
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unlikely to cause any problems since there should be very few
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pending calls for the main thread. */
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#define MAXPENDINGCALLSLOOP_MAIN 0
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struct _pending_calls {
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PyThreadState *handling_thread;
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PyMutex mutex;
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/* Request for running pending calls. */
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int32_t npending;
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/* The maximum allowed number of pending calls.
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If the queue fills up to this point then _PyEval_AddPendingCall()
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will return _Py_ADD_PENDING_FULL. */
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int32_t max;
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/* We don't want a flood of pending calls to interrupt any one thread
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for too long, so we keep a limit on the number handled per pass.
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A value of 0 means there is no limit (other than the maximum
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size of the list of pending calls). */
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int32_t maxloop;
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struct _pending_call calls[PENDINGCALLSARRAYSIZE];
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int first;
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int next;
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};
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typedef enum {
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PERF_STATUS_FAILED = -1, // Perf trampoline is in an invalid state
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PERF_STATUS_NO_INIT = 0, // Perf trampoline is not initialized
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PERF_STATUS_OK = 1, // Perf trampoline is ready to be executed
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} perf_status_t;
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#ifdef PY_HAVE_PERF_TRAMPOLINE
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struct code_arena_st;
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struct trampoline_api_st {
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void* (*init_state)(void);
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void (*write_state)(void* state, const void *code_addr,
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unsigned int code_size, PyCodeObject* code);
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int (*free_state)(void* state);
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void *state;
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Py_ssize_t code_padding;
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};
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#endif
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struct _ceval_runtime_state {
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struct {
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#ifdef PY_HAVE_PERF_TRAMPOLINE
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perf_status_t status;
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int perf_trampoline_type;
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Py_ssize_t extra_code_index;
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struct code_arena_st *code_arena;
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struct trampoline_api_st trampoline_api;
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FILE *map_file;
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Py_ssize_t persist_after_fork;
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#else
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int _not_used;
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#endif
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} perf;
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/* Pending calls to be made only on the main thread. */
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// The signal machinery falls back on this
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// so it must be especially stable and efficient.
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// For example, we use a preallocated array
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// for the list of pending calls.
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struct _pending_calls pending_mainthread;
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PyMutex sys_trace_profile_mutex;
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};
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#ifdef PY_HAVE_PERF_TRAMPOLINE
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# define _PyEval_RUNTIME_PERF_INIT \
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{ \
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.status = PERF_STATUS_NO_INIT, \
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.extra_code_index = -1, \
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.persist_after_fork = 0, \
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}
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#else
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# define _PyEval_RUNTIME_PERF_INIT {0}
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#endif
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struct _ceval_state {
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/* This variable holds the global instrumentation version. When a thread is
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running, this value is overlaid onto PyThreadState.eval_breaker so that
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changes in the instrumentation version will trigger the eval breaker. */
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uintptr_t instrumentation_version;
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int recursion_limit;
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struct _gil_runtime_state *gil;
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int own_gil;
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struct _pending_calls pending;
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};
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#ifdef __cplusplus
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}
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#endif
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#endif /* !Py_INTERNAL_CEVAL_STATE_H */
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