1 /* 2 * Copyright 2012 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include <dlfcn.h> 9 #include <stdio.h> 10 11 void usage() { 12 printf("[USAGE] skia_launcher program_name [options]\n"); 13 printf(" program_name: the skia program you want to launch (e.g. tests, bench)\n"); 14 printf(" options: options specific to the program you are launching\n"); 15 } 16 17 bool file_exists(const char* fileName) { 18 FILE* file = fopen(fileName, "r"); 19 if (file) { 20 fclose(file); 21 return true; 22 } 23 return false; 24 } 25 26 int launch_app(int (*app_main)(int, const char**), int argc, 27 const char** argv) { 28 return (*app_main)(argc, argv); 29 } 30 31 void* load_library(const char* appLocation, const char* libraryName) 32 { 33 // attempt to lookup the location of the shared libraries 34 char libraryLocation[100]; 35 sprintf(libraryLocation, "%s/lib%s.so", appLocation, libraryName); 36 if (!file_exists(libraryLocation)) { 37 printf("ERROR: Unable to find the '%s' library in the Skia App.\n", libraryName); 38 printf("ERROR: Did you provide the correct program_name?\n"); 39 usage(); 40 return NULL; 41 } 42 43 // load the appropriate library 44 void* appLibrary = dlopen(libraryLocation, RTLD_LOCAL | RTLD_LAZY); 45 if (!appLibrary) { 46 printf("ERROR: Unable to open the shared library.\n"); 47 printf("ERROR: %s", dlerror()); 48 return NULL; 49 } 50 51 return appLibrary; 52 } 53 54 int main(int argc, const char** argv) { 55 56 // check that the program name was specified 57 if (argc < 2) { 58 printf("ERROR: No program_name was specified\n"); 59 usage(); 60 return -1; 61 } 62 63 // attempt to lookup the location of the skia app 64 const char* appLocation = "/data/local/tmp"; 65 if (!file_exists(appLocation)) { 66 printf("ERROR: Unable to find /data/local/tmp on the device.\n"); 67 return -1; 68 } 69 70 #if defined(SKIA_DLL) 71 // load the local skia shared library 72 void* skiaLibrary = load_library(appLocation, "skia_android"); 73 if (NULL == skiaLibrary) 74 { 75 return -1; 76 } 77 #endif 78 79 // load the appropriate library 80 void* appLibrary = load_library(appLocation, argv[1]); 81 if (NULL == appLibrary) { 82 return -1; 83 } 84 85 // find the address of the main function 86 int (*app_main)(int, const char**); 87 *(void **) (&app_main) = dlsym(appLibrary, "main"); 88 89 if (!app_main) { 90 printf("ERROR: Unable to load the main function of the selected program.\n"); 91 printf("ERROR: %s\n", dlerror()); 92 return -1; 93 } 94 95 // pass all additional arguments to the main function 96 return launch_app(app_main, argc - 1, ++argv); 97 } 98
