1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Purpose: Provides internal function tracing in the form of a stack.
* The FUNC_ENTER() macro adds the function name to the function
* stack whenever a function is entered.
* As the functions return with FUNC_LEAVE,
* entries are removed from the stack.
*
* A function stack has a fixed maximum size. If this size is
* exceeded then the stack will be truncated and only the
* first called functions will have entries on the stack. This is
* expected to be a rare condition.
*
*/
#include "H5private.h" /* Generic Functions */
#include "H5CSprivate.h" /* Function stack */
#include "H5Eprivate.h" /* Error handling */
#ifdef H5_HAVE_CODESTACK
#define H5CS_MIN_NSLOTS 16 /* Minimum number of records in an function stack */
/* A function stack */
typedef struct H5CS_t {
unsigned nused; /* Number of records currently used in stack */
unsigned nalloc; /* Number of records current allocated for stack */
const char **rec; /* Array of function records */
} H5CS_t;
#ifdef H5_HAVE_THREADSAFE
/*
* The per-thread function stack. pthread_once() initializes a special
* key that will be used by all threads to create a stack specific to
* each thread individually. The association of stacks to threads will
* be handled by the pthread library.
*
* In order for this macro to work, H5CS_get_my_stack() must be preceded
* by "H5CS_t *fstack =".
*/
static H5CS_t *H5CS__get_stack(void);
#define H5CS_get_my_stack() H5CS__get_stack()
#else /* H5_HAVE_THREADSAFE */
/*
* The function stack. Eventually we'll have some sort of global table so each
* thread has it's own stack. The stacks will be created on demand when the
* thread first calls H5CS_push(). */
H5CS_t H5CS_stack_g[1];
#define H5CS_get_my_stack() (H5CS_stack_g + 0)
#endif /* H5_HAVE_THREADSAFE */
#ifdef H5_HAVE_THREADSAFE
/*-------------------------------------------------------------------------
* Function: H5CS__get_stack
*
* Purpose: Support function for H5CS_get_my_stack() to initialize and
* acquire per-thread function stack.
*
* Return: Success: function stack (H5CS_t *)
*
* Failure: NULL
*
* Programmer: Quincey Koziol
* February 6, 2003
*
*-------------------------------------------------------------------------
*/
static H5CS_t *
H5CS__get_stack(void)
{
H5CS_t *fstack;
FUNC_ENTER_PACKAGE_NOERR_NOFS
fstack = H5TS_get_thread_local_value(H5TS_funcstk_key_g);
if (!fstack) {
/* No associated value with current thread - create one */
#ifdef H5_HAVE_WIN_THREADS
fstack = (H5CS_t *)LocalAlloc(
LPTR, sizeof(H5CS_t)); /* Win32 has to use LocalAlloc to match the LocalFree in DllMain */
#else
fstack = (H5CS_t *)HDmalloc(
sizeof(H5CS_t)); /* Don't use H5MM_malloc() here, it causes infinite recursion */
#endif /* H5_HAVE_WIN_THREADS */
HDassert(fstack);
/* Set the thread-specific info */
fstack->nused = 0;
fstack->nalloc = 0;
fstack->rec = NULL;
/* (It's not necessary to release this in this API, it is
* released by the "key destructor" set up in the H5TS
* routines. See calls to pthread_key_create() in H5TS.c -QAK)
*/
H5TS_set_thread_local_value(H5TS_funcstk_key_g, (void *)fstack);
} /* end if */
FUNC_LEAVE_NOAPI_NOFS(fstack)
} /* end H5CS__get_stack() */
#endif /* H5_HAVE_THREADSAFE */
/*-------------------------------------------------------------------------
* Function: H5CS_print_stack
*
* Purpose: Prints a function stack.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Thursday, February 6, 2003
*
*-------------------------------------------------------------------------
*/
herr_t
H5CS_print_stack(const H5CS_t *fstack, FILE *stream)
{
const int indent = 2; /* Indentation level */
int i; /* Local index ariable */
/* Don't push this function on the function stack... :-) */
FUNC_ENTER_NOAPI_NOERR_NOFS
/* Sanity check */
HDassert(fstack);
/* Default to outputting information to stderr */
if (!stream)
stream = stderr;
HDfprintf(stream, "HDF5-DIAG: Function stack from %s ", H5_lib_vers_info_g);
/* try show the process or thread id in multiple processes cases*/
HDfprintf(stream, "thread %" PRIu64 ".", H5TS_thread_id());
if (fstack && fstack->nused > 0)
HDfprintf(stream, " Back trace follows.");
HDfputc('\n', stream);
for (i = fstack->nused - 1; i >= 0; --i)
HDfprintf(stream, "%*s#%03d: Routine: %s\n", indent, "", i, fstack->rec[i]);
FUNC_LEAVE_NOAPI_NOFS(SUCCEED)
} /* end H5CS_print_stack() */
/*-------------------------------------------------------------------------
* Function: H5CS_push
*
* Purpose: Pushes a new record onto function stack for the current
* thread.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Thursday, February 6, 2003
*
*-------------------------------------------------------------------------
*/
herr_t
H5CS_push(const char *func_name)
{
H5CS_t *fstack = H5CS_get_my_stack(); /* Current function stack for library */
/* Don't push this function on the function stack... :-) */
FUNC_ENTER_NOAPI_NOERR_NOFS
/* Sanity check */
HDassert(fstack);
HDassert(fstack->nused <= fstack->nalloc);
HDassert(func_name);
/* Check if we need to expand the stack of records */
if (fstack->nused == fstack->nalloc) {
size_t na = MAX((fstack->nalloc * 2), H5CS_MIN_NSLOTS);
/* Don't use H5MM_realloc here */
const char **x = (const char **)HDrealloc(fstack->rec, na * sizeof(const char *));
/* (Avoid returning an error from this routine, currently -QAK) */
HDassert(x);
fstack->rec = x;
fstack->nalloc = na;
} /* end if */
/* Push the function name */
fstack->rec[fstack->nused] = func_name;
fstack->nused++;
FUNC_LEAVE_NOAPI_NOFS(SUCCEED)
} /* end H5CS_push() */
/*-------------------------------------------------------------------------
* Function: H5CS_pop
*
* Purpose: Pops a record off function stack for the current thread.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Thursday, February 6, 2003
*
*-------------------------------------------------------------------------
*/
herr_t
H5CS_pop(void)
{
H5CS_t *fstack = H5CS_get_my_stack();
/* Don't push this function on the function stack... :-) */
FUNC_ENTER_NOAPI_NOERR_NOFS
/* Sanity check */
HDassert(fstack);
HDassert(fstack->nused > 0);
/* Pop the function. */
fstack->nused--;
FUNC_LEAVE_NOAPI_NOFS(SUCCEED);
} /* end H5CS_pop() */
/*-------------------------------------------------------------------------
* Function: H5CS_copy_stack
*
* Purpose: Makes a copy of the current stack
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Tuesday, August 9, 2005
*
*-------------------------------------------------------------------------
*/
H5CS_t *
H5CS_copy_stack(void)
{
H5CS_t *old_stack = H5CS_get_my_stack(); /* Existing function stack for library */
H5CS_t *new_stack; /* New function stack, for copy */
unsigned u; /* Local index variable */
H5CS_t *ret_value = NULL; /* Return value */
/* Don't push this function on the function stack... :-) */
FUNC_ENTER_NOAPI_NOFS
/* Sanity check */
HDassert(old_stack);
/* Allocate a new stack */
/* (Don't use library allocate code, since this code stack supports it) */
if (NULL == (new_stack = HDcalloc(1, sizeof(H5CS_t))))
HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, NULL, "can't allocate function stack")
if (NULL == (new_stack->rec = HDcalloc(old_stack->nused, sizeof(const char *))))
HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, NULL, "can't allocate function stack records")
/* Copy pointers on old stack to new one */
/* (Strings don't need to be duplicated, they are statically allocated) */
HDmemcpy(new_stack->rec, old_stack->rec, sizeof(char *) * old_stack->nused);
new_stack->nused = new_stack->nalloc = old_stack->nused;
/* Set the return value */
ret_value = new_stack;
done:
FUNC_LEAVE_NOAPI_NOFS(ret_value)
} /* end H5CS_copy_stack() */
/*-------------------------------------------------------------------------
* Function: H5CS_close_stack
*
* Purpose: Closes and frees a copy of a stack
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Tuesday, August 9, 2005
*
*-------------------------------------------------------------------------
*/
herr_t
H5CS_close_stack(H5CS_t *stack)
{
unsigned u; /* Local index variable */
/* Don't push this function on the function stack... :-) */
FUNC_ENTER_NOAPI_NOERR_NOFS
/* Sanity check */
HDassert(stack);
/* Free stack */
/* The function name string are statically allocated (by the compiler)
* and are not allocated, so there's no need to free them.
*/
if (stack->rec) {
HDfree(stack->rec);
stack->rec = NULL;
} /* end if */
if (stack)
HDfree(stack);
FUNC_LEAVE_NOAPI_NOFS(SUCCEED)
} /* end H5CS_close_stack() */
#endif /* H5_HAVE_CODESTACK */
|
