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cf6110ba13
This replaces some usages of PyThread_type_lock with PyMutex, which does not require memory allocation to initialize. This simplifies some of the runtime initialization and is also one step towards avoiding changing the default raw memory allocator during initialize/finalization, which can be non-thread-safe in some circumstances.
98 lines
2.4 KiB
C
98 lines
2.4 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_calls {
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int busy;
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PyMutex mutex;
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/* Request for running pending calls. */
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int32_t calls_to_do;
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#define NPENDINGCALLS 32
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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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} calls[NPENDINGCALLS];
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int first;
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int last;
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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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};
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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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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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struct _pending_calls pending_mainthread;
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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 single variable consolidates all requests to break out of
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* the fast path in the eval loop.
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* It is by far the hottest field in this struct and
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* should be placed at the beginning. */
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uintptr_t eval_breaker;
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/* Avoid false sharing */
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int64_t padding[7];
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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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