/*
 * 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 */