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annotate dep/animia/src/util/osx.cc @ 237:a7d0d543b334

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*: make OS X builds succeed new script: deploy_build.sh, creates the app bundle
author Paper <paper@paper.us.eu.org>
date Fri, 19 Jan 2024 11:14:44 -0500
parents 8548dc425697
children
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1 #include "animia/util/osx.h"
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2
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3 #include <string>
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4 #include <memory>
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5
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6 #include <sys/sysctl.h>
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7 #include <libproc.h>
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8
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9 namespace animia::internal::osx::util {
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11 /* all of these LaunchServices things use *internal functions* that are subject
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12 * to change. Granted, it's not very likely that these will change very much
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13 * because I'm fairly sure Apple uses them lots in their own internal code.
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14 */
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15 typedef CFTypeRef (*LSASNCreateWithPidSpec)(CFAllocatorRef, pid_t);
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16 typedef CFDictionaryRef (*LSCopyApplicationInformationSpec)(int, CFTypeRef, CFArrayRef);
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17
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18 static LSCopyApplicationInformationSpec LSCopyApplicationInformation = nullptr;
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19 static LSASNCreateWithPidSpec LSASNCreateWithPid = nullptr;
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21 /* retrieved from LaunchServicesSPI.h in WebKit */
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22 static constexpr int kLSDefaultSessionID = -2;
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24 static const CFStringRef kLaunchServicesBundleID = CFSTR("com.apple.LaunchServices");
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26 /* retrieved dynamically */
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27 static CFStringRef kLSDisplayNameKey = nullptr;
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28 static CFStringRef kLSPIDKey = nullptr;
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30 static bool GetLaunchServicesPrivateSymbols() {
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31 CFBundleRef launch_services_bundle = CFBundleGetBundleWithIdentifier(kLaunchServicesBundleID);
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32 if (!launch_services_bundle)
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33 return false;
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34
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35 LSCopyApplicationInformation = (LSCopyApplicationInformationSpec)CFBundleGetFunctionPointerForName(launch_services_bundle, CFSTR("_LSCopyApplicationInformation"));
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36 if (!LSCopyApplicationInformation)
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37 return false;
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38
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39 LSASNCreateWithPid = (LSASNCreateWithPidSpec)CFBundleGetFunctionPointerForName(launch_services_bundle, CFSTR("_LSASNCreateWithPid"));
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40 if (!LSASNCreateWithPid)
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41 return false;
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42
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43 kLSDisplayNameKey = *(CFStringRef*)CFBundleGetDataPointerForName(launch_services_bundle, CFSTR("_kLSDisplayNameKey"));
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44 if (!kLSDisplayNameKey)
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45 return false;
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47 kLSPIDKey = *(CFStringRef*)CFBundleGetDataPointerForName(launch_services_bundle, CFSTR("_kLSPIDKey"));
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48 if (!kLSPIDKey)
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49 return false;
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50
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51 return true;
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52 }
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54 static bool LaunchServicesGetProcessName(pid_t pid, std::string& result) {
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55 if (!LSCopyApplicationInformation || !LSASNCreateWithPid)
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56 if (!GetLaunchServicesPrivateSymbols())
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57 return false;
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59 CFTypeRef asn = LSASNCreateWithPid(kCFAllocatorDefault, pid);
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60 if (!asn)
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61 return false;
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63 CFArrayRef request_array = CFArrayCreate(NULL, (const void **)kLSDisplayNameKey, 1, NULL);
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64 if (!request_array) {
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65 CFRelease(asn);
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66 return false;
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67 }
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68
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69 CFDictionaryRef dictionary = LSCopyApplicationInformation(kLSDefaultSessionID, asn, request_array);
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70
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71 CFRelease(request_array);
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72 CFRelease(asn);
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73
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74 if (!dictionary)
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75 return false;
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77 {
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78 CFStringRef rstr;
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80 if (!CFDictionaryGetValueIfPresent(dictionary, kLSDisplayNameKey, (CFTypeRef*)&rstr) || !rstr)
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81 return false;
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82
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83 if (!StringFromCFString(rstr, result)) {
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84 CFRelease(rstr);
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85 return false;
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86 }
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87
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88 CFRelease(rstr);
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89 }
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91 result.resize(result.find('\0'));
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92
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93 return true;
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94 }
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95
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96 bool StringFromCFString(CFStringRef string, std::string& result) {
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97 if (!string)
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98 return false;
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99
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100 result.resize(CFStringGetMaximumSizeForEncoding(CFStringGetLength(string), kCFStringEncodingUTF8) + 1);
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101 if (!CFStringGetCString(string, &result.front(), result.length(), kCFStringEncodingUTF8))
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102 return false;
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103
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104 return true;
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105 }
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107 static bool GetProcessArgs(pid_t pid, std::string& args) {
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108 /* sysctl shouldn't touch these, so we define them as const */
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109 const int mib[3] = {CTL_KERN, KERN_PROCARGS2, static_cast<int>(pid)};
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110 const size_t mib_size = sizeof(mib)/sizeof(*mib);
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111
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112 /* Get the initial size of the array
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113 *
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114 * NOTE: it IS possible for this value to change inbetween calls to sysctl().
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115 * Unfortunately, I couldn't care less about handling this. :)
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116 */
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117 size_t size;
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118 {
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119 int ret = sysctl((int*)mib, mib_size, nullptr, &size, nullptr, 0);
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120 if (ret)
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121 return false;
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122 }
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123
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124 /* Reserve the space for it in args */
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125 args.resize(size);
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126
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127 /* Get the contents of argc and argv */
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128 {
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129 int ret = sysctl((int*)mib, mib_size, &args.front(), &size, NULL, 0);
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130 if (ret)
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131 return false;
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132 }
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133
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134 /* Is the size big enough to hold at least argc? */
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135 if (size < sizeof(int))
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136 return false;
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137
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138 args.resize(size);
190
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139 return true;
163
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140 }
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141
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142 static bool GetProcessNameFromArgs(pid_t pid, std::string& result) {
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143 if (!GetProcessArgs(pid, result))
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144 return false;
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145
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146 /* Get argc using memcpy */
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147 int argc;
190
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148 memcpy(&result, &result.front(), sizeof(argc));
163
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149
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150 /* Do we even have argv[0]? */
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151 if (argc < 1)
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152 return false;
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153
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154 /* Find the first null character */
190
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155 size_t null_pos = result.find('\0', sizeof(argc));
163
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156 if (null_pos == std::string::npos)
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157 return false;
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158
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159 /* Find the last slash */
190
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160 size_t last_slash = result.rfind('/', null_pos);
163
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161 if (last_slash == std::string::npos)
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162 return false;
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163
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164 /* Return our result */
190
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165 result = result.substr(last_slash + 1, null_pos - last_slash - 1);
163
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166 return true;
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167 }
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168
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169 static bool GetProcessNameFromKernel(pid_t pid, std::string& result) {
165
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170 result.resize(2 * MAXCOMLEN);
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171
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172 int size = proc_name(pid, &result.front(), result.length());
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173 if (!size)
163
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174 return false;
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175
165
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176 result.resize(size);
163
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177 return true;
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178 }
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179
190
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180 bool GetProcessName(pid_t pid, std::string& result) {
163
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181 #ifdef HAVE_COREFOUNDATION
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182 if (LaunchServicesGetProcessName(pid, result))
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183 return true;
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184 #endif // HAVE_COREFOUNDATION
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185
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186 /* Try parsing the arguments, this prevents the process name being
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187 cut off to 2*MAXCOMLEN (32 chars) */
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188 if (GetProcessNameFromArgs(pid, result))
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189 return true;
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190
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191 /* Then attempt getting it from the kernel, which results in the
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192 process name being cut to 32 chars (worse, 16 chars if p_name is
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193 unavailable) */
44c5e6dd9488 dep/animia/osx: move GetProcessName to util/osx so we can use it in quartz
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194 if (GetProcessNameFromKernel(pid, result))
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195 return true;
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196
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197 return false;
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diff changeset
198 }
162
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parents:
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199
61b76c7b656a dep/animia: add os x launchservices method
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parents:
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200 }