greenplumn plpy_main 源码
greenplumn plpy_main 代码
文件路径：/src/pl/plpython/plpy_main.h
/*
* src/pl/plpython/plpy_main.h
*/
#ifndef PLPY_MAIN_H
#define PLPY_MAIN_H
#include "plpy_procedure.h"
/* the interpreter's globals dict */
extern PyObject *PLy_interp_globals;
/*
* A stack of PL/Python execution contexts. Each time user-defined Python code
* is called, an execution context is created and put on the stack. After the
* Python code returns, the context is destroyed.
*/
typedef struct PLyExecutionContext
{
PLyProcedure *curr_proc; /* the currently executing procedure */
MemoryContext scratch_ctx; /* a context for things like type I/O */
struct PLyExecutionContext *next; /* previous stack level */
} PLyExecutionContext;
/* Get the current execution context */
extern PLyExecutionContext *PLy_current_execution_context(void);
/* Get the scratch memory context for specified execution context */
extern MemoryContext PLy_get_scratch_context(PLyExecutionContext *context);
extern bool PLy_enter_python_intepreter;
extern int PLy_python_cancel_handler(void *arg);
extern void PLy_handle_cancel_interrupt(void);
#endif /* PLPY_MAIN_H */
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