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7
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1 /* vi:set ts=8 sts=8 sw=8:
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2 *
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3 * VIM - Vi IMproved by Bram Moolenaar
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4 * Visual Workshop integration by Gordon Prieur
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5 *
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6 * Do ":help uganda" in Vim to read copying and usage conditions.
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7 * Do ":help credits" in Vim to see a list of people who contributed.
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8 * See README.txt for an overview of the Vim source code.
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9 */
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10
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11 /*
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12 * WorkShop Debugging Tools. What are these tools and why are they important?
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13 * There are two main tools here. The first tool is a tool for delaying or
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14 * stopping gvim during startup. The second tool is a protocol log tool.
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15 *
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16 * The startup delay tool is called wsdebug_wait(). This is very important for
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17 * debugging startup problems because gvim will be started automatically from
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18 * workshop and cannot be run directly from a debugger. The only way to debug
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19 * a gvim started by workshop is by attaching a debugger to it. Without this
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20 * tool all starup code will have completed before you can get the pid and
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21 * attach.
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22 *
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23 * The second tool is a protocol log tool. The workshop editor server and gvim
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24 * pass information back and forth during a workshop session. Sometimes it is
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25 * very important to peruse this conversation in order to understand what is
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26 * happening. The wsdebug_log_init() call sets up this protocol log tool and
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27 * wsdebug() and wstrace() calls output the information to the log.
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28 *
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29 * This code must have WSDEBUG defined for it to be compiled into vim/gvim.
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30 */
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31
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32 #ifdef WSDEBUG
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33
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34 #include "vim.h"
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35
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36 FILE *ws_debug = NULL;
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37 u_int ws_dlevel = 0; /* ws_debug verbosity level */
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38
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39 void wsdebug(char *, ...);
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40 void wstrace(char *, ...);
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41
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42 static int lookup(char *);
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43 static int errorHandler(Display *, XErrorEvent *);
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44
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45
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46 /*
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47 * wsdebug_wait - This function can be used to delay or stop execution of vim.
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48 * Its normally used to delay startup while attaching a
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49 * debugger to a running process. Since workshop starts gvim
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50 * from a background process this is the only way to debug
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51 * startup problems.
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52 */
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53
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54 void wsdebug_wait(
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55 u_int wait_flags, /* tells what to do */
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56 char *wait_var, /* wait environment variable */
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57 u_int wait_secs) /* how many seconds to wait */
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58 {
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59
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60 init_homedir(); /* not inited yet */
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61 #ifdef USE_WDDUMP
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62 WDDump(0, 0, 0);
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63 #endif
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64
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65 /* for debugging purposes only */
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66 if (wait_flags & WT_ENV && wait_var && getenv(wait_var) != NULL) {
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67 sleep(atoi(getenv(wait_var)));
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68 } else if (wait_flags & WT_WAIT && lookup("~/.gvimwait")) {
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69 sleep(wait_secs > 0 && wait_secs < 120 ? wait_secs : 20);
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70 } else if (wait_flags & WT_STOP && lookup("~/.gvimstop")) {
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71 int w = 1;
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72 while (w) {
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73 ;
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74 }
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75 }
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76 } /* end wsdebug_wait */
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77
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78
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79 void
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80 wsdebug_log_init(
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81 char *log_var, /* env var with log file */
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82 char *level_var) /* env var with ws_debug level */
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83 {
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84 char *file; /* possible ws_debug output file */
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85 char *cp; /* ws_dlevel pointer */
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86
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273
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87 if (log_var && (file = getenv(log_var)) != NULL)
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88 {
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7
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89 char buf[BUFSIZ];
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90
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273
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91 vim_snprintf(buf, sizeof(buf), "date > %s", file);
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92 system(buf);
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93 ws_debug = fopen(file, "a");
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94 if (level_var && (cp = getenv(level_var)) != NULL) {
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95 ws_dlevel = strtoul(cp, NULL, 0);
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96 } else {
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97 ws_dlevel = WS_TRACE; /* default level */
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98 }
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99 /* XSetErrorHandler(errorHandler); */
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100 }
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101
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102 } /* end wsdebug_log_init */
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103
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104
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105
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106
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107 void
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108 wstrace(
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109 char *fmt,
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110 ...)
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111 {
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112 va_list ap;
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113
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114 if (ws_debug!= NULL && (ws_dlevel & (WS_TRACE | WS_TRACE_VERBOSE))) {
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115 va_start(ap, fmt);
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116 vfprintf(ws_debug, fmt, ap);
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117 va_end(ap);
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118 fflush(ws_debug);
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119 }
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120
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121 } /* end wstrace */
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122
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123
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124 void
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125 wsdebug(
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126 char *fmt,
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127 ...)
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128 {
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129 va_list ap;
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130
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131 if (ws_debug != NULL) {
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132 va_start(ap, fmt);
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133 vfprintf(ws_debug, fmt, ap);
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134 va_end(ap);
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135 fflush(ws_debug);
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136 }
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137
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138 } /* end wsdebug */
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139
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140
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141 static int
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142 lookup(
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143 char *file)
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144 {
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145 char buf[BUFSIZ];
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146
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147 expand_env((char_u *) file, (char_u *) buf, BUFSIZ);
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148 return (access(buf, F_OK) == 0);
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149
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150 } /* end lookup */
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151
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152 static int
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153 errorHandler(
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154 Display *dpy,
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155 XErrorEvent *err)
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156 {
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157 char msg[256];
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158 char buf[256];
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159
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160 XGetErrorText(dpy, err->error_code, msg, sizeof(msg));
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161 wsdebug("\n\nWSDEBUG Vim: X Error of failed request: %s\n", msg);
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162
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163 sprintf(buf, "%d", err->request_code);
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164 XGetErrorDatabaseText(dpy,
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165 "XRequest", buf, "Unknown", msg, sizeof(msg));
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166 wsdebug("\tMajor opcode of failed request: %d (%s)\n",
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167 err->request_code, msg);
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168 if (err->request_code > 128) {
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169 wsdebug("\tMinor opcode of failed request: %d\n",
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170 err->minor_code);
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171 }
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172
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173 return 0;
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174 }
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175
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176
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177
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178 #endif /* WSDEBUG */
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