src/gallium/drivers/ddebug/dd_util.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2015 Advanced Micro Devices, Inc.
   4  * Copyright 2008 VMware, Inc.
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * on the rights to use, copy, modify, merge, publish, distribute, sub
  11  * license, and/or sell copies of the Software, and to permit persons to whom
  12  * the Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the next
  15  * paragraph) shall be included in all copies or substantial portions of the
  16  * Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
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  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #ifndef DD_UTIL_H
  29 #define DD_UTIL_H
  30
  31 #include <stdio.h>
  32 #include <errno.h>
  33 #include <unistd.h>
  34 #include <sys/stat.h>
  35
  36 #include "c99_alloca.h"
  37 #include "os/os_process.h"
  38 #include "util/u_atomic.h"
  39 #include "util/u_debug.h"
  40
  41 /* name of the directory in home */
  42 #define DD_DIR "ddebug_dumps"
  43
  44 static inline void
  45 dd_get_debug_filename_and_mkdir(char *buf, size_t buflen, bool verbose)
  46 {
  47    static unsigned index;
  48    char proc_name[128], dir[256];
  49
  50    if (!os_get_process_name(proc_name, sizeof(proc_name))) {
  51       fprintf(stderr, "dd: can't get the process name\n");
  52       strcpy(proc_name, "unknown");
  53    }
  54
  55    snprintf(dir, sizeof(dir), "%s/"DD_DIR, debug_get_option("HOME", "."));
  56
  57    if (mkdir(dir, 0774) && errno != EEXIST)
  58       fprintf(stderr, "dd: can't create a directory (%i)\n", errno);
  59
  60    snprintf(buf, buflen, "%s/%s_%u_%08u", dir, proc_name, getpid(),
  61             p_atomic_inc_return(&index) - 1);
  62
  63    if (verbose)
  64       fprintf(stderr, "dd: dumping to file %s\n", buf);
  65 }
  66
  67 static inline FILE *
  68 dd_get_debug_file(bool verbose)
  69 {
  70    char name[512];
  71    FILE *f;
  72
  73    dd_get_debug_filename_and_mkdir(name, sizeof(name), verbose);
  74    f = fopen(name, "w");
  75    if (!f) {
  76       fprintf(stderr, "dd: can't open file %s\n", name);
  77       return NULL;
  78    }
  79
  80    return f;
  81 }
  82
  83 static inline void
  84 dd_parse_apitrace_marker(const char *string, int len, unsigned *call_number)
  85 {
  86    unsigned num;
  87    char *s;
  88
  89    if (len <= 0)
  90       return;
  91
  92    /* Make it zero-terminated. */
  93    s = alloca(len + 1);
  94    memcpy(s, string, len);
  95    s[len] = 0;
  96
  97    /* Parse the number. */
  98    errno = 0;
  99    num = strtol(s, NULL, 10);
 100    if (errno)
 101       return;
 102
 103    *call_number = num;
 104 }
 105
 106 #endif /* DD_UTIL_H */