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Add comments about PyThreadState and the usage of its fields.

This commit is contained in:
Brett Cannon 2005-06-25 07:07:35 +00:00
parent 527c46996f
commit 55fa66dd45
2 changed files with 9 additions and 1 deletions
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6
Include/pystate.h
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@ -53,12 +53,16 @@ typedef int (*Py_tracefunc)(PyObject *, struct _frame *, int, PyObject *);
#define PyTrace_C_RETURN 6
typedef struct _ts {
/* See Python/ceval.c for comments explaining most fields */
struct _ts *next;
PyInterpreterState *interp;
struct _frame *frame;
int recursion_depth;
/* 'tracing' keeps track of the execution depth when tracing/profiling.
This is to prevent the actual trace/profile code from being recorded in
the trace/profile. */
int tracing;
int use_tracing;
@ -75,7 +79,7 @@ typedef struct _ts {
PyObject *exc_value;
PyObject *exc_traceback;
PyObject *dict;
PyObject *dict; /* Stores per-thread state */
/* tick_counter is incremented whenever the check_interval ticker
* reaches zero. The purpose is to give a useful measure of the number

4
Python/ceval.c
View File

@ -3284,10 +3284,12 @@ PyEval_SetProfile(Py_tracefunc func, PyObject *arg)
Py_XINCREF(arg);
tstate->c_profilefunc = NULL;
tstate->c_profileobj = NULL;
/* Must make sure that tracing is not ignored if 'temp' is freed */
tstate->use_tracing = tstate->c_tracefunc != NULL;
Py_XDECREF(temp);
tstate->c_profilefunc = func;
tstate->c_profileobj = arg;
/* Flag that tracing or profiling is turned on */
tstate->use_tracing = (func != NULL) || (tstate->c_tracefunc != NULL);
}
@ -3299,10 +3301,12 @@ PyEval_SetTrace(Py_tracefunc func, PyObject *arg)
Py_XINCREF(arg);
tstate->c_tracefunc = NULL;
tstate->c_traceobj = NULL;
/* Must make sure that profiling is not ignored if 'temp' is freed */
tstate->use_tracing = tstate->c_profilefunc != NULL;
Py_XDECREF(temp);
tstate->c_tracefunc = func;
tstate->c_traceobj = arg;
/* Flag that tracing or profiling is turned on */
tstate->use_tracing = ((func != NULL)
|| (tstate->c_profilefunc != NULL));
}