7 #include <libcore/lc_opts.h>
8 #include <libcore/lc_opts_enum.h>
9 #endif /* WITH_LIBCORE */
23 #include "bejavacoal.h"
25 /* Path to the jar file. A little OS dependent convenience. */
27 static char jar_file[512] = "y:\\user\\hack\\public\\coal.jar";
29 static char jar_file[512] = "/ben/hack/public/coal.jar";
32 static char cls_name[256] = "coalescing/mst/safe/Algo";
34 /* Name of teh JVM dll/so */
35 static char jvm_lib[512] = { 0 };
38 static const lc_opt_table_entry_t options[] = {
39 LC_OPT_ENT_STR ("jvm", "absolute path to jvm dll", jvm_lib, sizeof(jvm_lib)),
40 LC_OPT_ENT_STR ("jar", "jar file of the coalescer", jar_file, sizeof(jar_file)),
41 LC_OPT_ENT_STR ("cls", "name of the class providing the factory", cls_name, sizeof(cls_name)),
45 void java_coal_register_options(lc_opt_entry_t *grp)
47 lc_opt_entry_t *jc_grp = lc_opt_get_grp(grp, "jc");
48 lc_opt_add_table(jc_grp, options);
55 typedef struct _jni_env_t {
63 Ugly code to retrieve the JVM dll/so file.
69 static void *find_jvm_symbol(const char *vmlibpath, const char *sym)
71 HINSTANCE hVM = LoadLibrary(vmlibpath);
72 return hVM ? GetProcAddress(hVM, sym) : NULL;
75 #define JRE_KEY "SOFTWARE\\JavaSoft\\Java Development Kit"
77 static char *locate_jvm_lib(char *path, size_t path_len)
81 DWORD version_len = sizeof(version);
82 DWORD dwPathLen = path_len;
85 RegOpenKeyEx(HKEY_LOCAL_MACHINE, JRE_KEY, 0, KEY_QUERY_VALUE, &hKey);
86 RegQueryValueEx(hKey, "CurrentVersion", NULL, NULL, (LPBYTE) version, &version_len);
89 _snprintf(buf, sizeof(buf), JRE_KEY "\\%s", version);
90 RegOpenKeyEx(HKEY_LOCAL_MACHINE, buf, 0, KEY_QUERY_VALUE, &hKey);
91 RegQueryValueEx(hKey, "JavaHome", NULL, NULL, (LPBYTE) path, &dwPathLen);
94 strncat(path, "\\jre\\bin\\server\\jvm.dll", path_len);
100 static void *find_jvm_symbol(const char *vmlibpath, const char *sym)
102 void *libVM = dlopen(vmlibpath, RTLD_LAZY);
103 return libVM ? dlsym(libVM, sym) : NULL;
106 static char *locate_jvm_lib(char *path, size_t n)
113 static int start_vm(jni_env_t *env, int argc, char *argv[])
121 long (JNICALL * create_func)(JavaVM **, void **, void *) = find_jvm_symbol(jvm_lib, "JNI_CreateJavaVM");
124 fprintf(stderr, "could not find JVM creation function\n");
128 memset(&args, 0, sizeof(args));
129 opts = malloc(argc * sizeof(opts[0]));
130 for(i = 0; i < argc; ++i) {
131 opts[i].optionString = argv[i];
132 opts[i].extraInfo = NULL;
135 args.version = JNI_VERSION_1_4;
136 args.nOptions = argc;
138 args.ignoreUnrecognized = JNI_FALSE;
140 ret = create_func(&env->jvm, (void **) &env->jni, &args);
148 static void stop_vm(jni_env_t *env)
150 JavaVM *jvm = env->jvm;
151 (*jvm)->DetachCurrentThread(jvm);
152 (*jvm)->DestroyJavaVM(jvm);
155 static int jvm_inited = 0;
156 static jni_env_t env;
157 void (*old_int_handler)(int);
158 void (*old_abrt_handler)(int);
160 static void sig_jvm_destroy_at_exit(int signal)
167 old_abrt_handler(signal);
170 old_int_handler(signal);
176 static void jvm_destroy_at_exit(void)
178 sig_jvm_destroy_at_exit(0);
181 static jni_env_t *get_jvm(void)
188 if(strlen(jvm_lib) == 0) {
189 if(!locate_jvm_lib(jvm_lib, sizeof(jvm_lib))) {
190 fprintf(stderr, "could not find jvm library\n");
195 snprintf(cp_param, sizeof(cp_param), "-Djava.class.path=%s", jar_file);
197 start_vm(&env, sizeof(args) / sizeof(args[0]), args);
199 old_int_handler = signal(SIGINT, sig_jvm_destroy_at_exit);
200 old_abrt_handler = signal(SIGABRT, sig_jvm_destroy_at_exit);
201 atexit(jvm_destroy_at_exit);
207 static void check(jni_env_t *env, const char *file, int line)
209 JNIEnv *jni = env->jni;
210 jboolean exc = (*jni)->ExceptionCheck(jni);
212 fprintf(stderr, "%s:%d: ", file, line);
213 (*jni)->ExceptionDescribe(jni);
214 (*jni)->ExceptionClear(jni);
220 #define CHECK(env) check(env, __FILE__, __LINE__)
238 static const struct _mth_info_t mthis[mth_last] = {
239 { "addIntEdge", "(II)V" }, /* public void addIntEdge(int, int); */
240 { "addAffEdge", "(III)V" }, /* public void addAffEdge(int, int, int); */
241 { "setColor", "(II)V" }, /* public void setColor(int, int); */
242 { "getColor", "(I)I" }, /* public int getColor(int); */
243 { "forbidColor", "(II)V" }, /* public void forbidColor(int, int); */
244 { "coalesce", "()V" }, /* public void coalesce(); */
245 { "dump", "(Ljava/lang/String;)V" } /* public void dump(String); */
248 /* public static coalescing.Extern createExtern(java.lang.String, int, int, int); */
249 static const struct _mth_info_t mthi_factory = {
250 "createExtern", "(Ljava/lang/String;III)Lcoalescing/Extern;"
253 struct _java_coal_t {
258 jmethodID mth_ids[mth_last];
261 static void jc_call_void(java_coal_t *c, int mth_index, ...)
263 JNIEnv *jni = c->env->jni;
264 jmethodID mid = c->mth_ids[mth_index];
268 va_start(args, mth_index);
269 (*jni)->CallVoidMethodV(jni, c->obj, mid, args);
274 static int jc_call_int(java_coal_t *c, int mth_index, ...)
276 JNIEnv *jni = c->env->jni;
277 jmethodID mid = c->mth_ids[mth_index];
282 va_start(args, mth_index);
283 res = (*jni)->CallIntMethodV(jni, c->obj, mid, args);
290 java_coal_t *java_coal_init(const char *graph_name, int n_nodes, int n_regs, int dbg_level)
293 jni_env_t *env = get_jvm();
294 JNIEnv *jni = env->jni;
300 c = malloc(sizeof(c[0]));
301 memset(c, 0, sizeof(c[0]));
304 /* Find the class we are are looking for. */
305 cls = (*jni)->FindClass(jni, cls_name);
308 /* Get the static factory method. */
309 fact = (*jni)->GetStaticMethodID(jni, cls, mthi_factory.name, mthi_factory.sig);
312 /* Call the factory. */
313 str = (*jni)->NewStringUTF(jni, graph_name);
315 c->obj = (*jni)->CallStaticObjectMethod(jni, cls, fact, str, n_nodes, n_regs, dbg_level);
317 c->cls = (*jni)->GetObjectClass(jni, c->obj);
319 /* Reference the created object. */
320 c->obj = (*jni)->NewGlobalRef(jni, c->obj);
323 /* Lookup the member methods of the object. */
324 for(i = 0; i < mth_last; ++i) {
325 c->mth_ids[i] = (*jni)->GetMethodID(jni, c->cls, mthis[i].name, mthis[i].sig);
332 void java_coal_destroy(java_coal_t *c) {
333 JNIEnv *jni = c->env->jni;
334 (*jni)->DeleteGlobalRef(jni, c->obj);
338 void java_coal_add_int_edge(java_coal_t *c, int n, int m)
340 jc_call_void(c, mth_add_int_edge, (jint) n, (jint) m);
343 void java_coal_add_aff_edge(java_coal_t *c, int n, int m, int weight)
345 jc_call_void(c, mth_add_aff_edge, (jint) n, (jint) m, (jint) weight);
348 void java_coal_set_color(java_coal_t *c, int n, int col)
350 jc_call_void(c, mth_set_color, (jint) n, (jint) col);
353 void java_coal_forbid_color(java_coal_t *c, int n, int col)
355 jc_call_void(c, mth_forbid_color, (jint) n, (jint) col);
358 void java_coal_coalesce(java_coal_t *c)
360 jc_call_void(c, mth_coalesce);
363 void java_coal_dump(java_coal_t *c, const char *fn)
365 JNIEnv *jni = c->env->jni;
366 jmethodID mid = c->mth_ids[mth_dump];
369 str = (*jni)->NewStringUTF(jni, fn);
371 (*jni)->CallVoidMethod(jni, c->obj, mid, str);
375 int java_coal_get_color(java_coal_t *c, int n)
377 return jc_call_int(c, mth_get_color, (jint) n);
382 java_coal_t *java_coal_init(const char *graph_name, int n_nodes, int n_regs, int dbg_level)
384 assert(0 && "use --enable-jvm");
388 void java_coal_destroy(java_coal_t *c)
390 assert(0 && "use --enable-jvm");
394 void java_coal_add_int_edge(java_coal_t *c, int n, int m)
396 assert(0 && "use --enable-jvm");
399 void java_coal_add_aff_edge(java_coal_t *c, int n, int m, int weight)
401 assert(0 && "use --enable-jvm");
404 void java_coal_set_color(java_coal_t *c, int n, int col)
406 assert(0 && "use --enable-jvm");
409 void java_coal_forbid_color(java_coal_t *c, int n, int col)
411 assert(0 && "use --enable-jvm");
414 void java_coal_coalesce(java_coal_t *c)
416 assert(0 && "use --enable-jvm");
419 void java_coal_dump(java_coal_t *c, const char *fn)
421 assert(0 && "use --enable-jvm");
424 int java_coal_get_color(java_coal_t *c, int n)
426 assert(0 && "use --enable-jvm");
431 #endif /* WITH_JVM */