7 #include <libcore/lc_opts.h>
8 #include <libcore/lc_opts_enum.h>
9 #endif /* WITH_LIBCORE */
22 #include "bejavacoal.h"
24 /* Path to the jar file. A little OS dependent convenience. */
26 static char jar_file[512] = "y:\\user\\hack\\public\\coal.jar";
28 static char jar_file[512] = "/ben/hack/public/coal.jar";
31 static char cls_name[256] = "coalescing/mst/safe/Algo";
33 /* Name of teh JVM dll/so */
34 static char jvm_lib[512] = { 0 };
37 static const lc_opt_table_entry_t options[] = {
38 LC_OPT_ENT_STR ("jvm", "absolute path to jvm dll", jvm_lib, sizeof(jvm_lib)),
39 LC_OPT_ENT_STR ("jar", "jar file of the coalescer", jar_file, sizeof(jar_file)),
40 LC_OPT_ENT_STR ("cls", "name of the class providing the factory", cls_name, sizeof(cls_name)),
44 void be_java_coal_register_options(lc_opt_entry_t *grp)
46 lc_opt_entry_t *jc_grp = lc_opt_get_grp(grp, "jc");
47 lc_opt_add_table(jc_grp, options);
54 typedef struct _jni_env_t {
61 Ugly code to retrieve the JVM dll/so file.
67 static void *find_jvm_symbol(const char *vmlibpath, const char *sym)
69 HINSTANCE hVM = LoadLibrary(vmlibpath);
70 return hVM ? GetProcAddress(hVM, sym) : NULL;
73 #define JRE_KEY "SOFTWARE\\JavaSoft\\Java Development Kit"
75 static char *locate_jvm_lib(char *path, size_t path_len)
79 DWORD version_len = sizeof(version);
80 DWORD dwPathLen = path_len;
83 RegOpenKeyEx(HKEY_LOCAL_MACHINE, JRE_KEY, 0, KEY_QUERY_VALUE, &hKey);
84 RegQueryValueEx(hKey, "CurrentVersion", NULL, NULL, (LPBYTE) version, &version_len);
87 _snprintf(buf, sizeof(buf), JRE_KEY "\\%s", version);
88 RegOpenKeyEx(HKEY_LOCAL_MACHINE, buf, 0, KEY_QUERY_VALUE, &hKey);
89 RegQueryValueEx(hKey, "JavaHome", NULL, NULL, (LPBYTE) path, &dwPathLen);
92 strncat(path, "\\jre\\bin\\server\\jvm.dll", path_len);
98 static void *find_jvm_symbol(const char *vmlibpath, const char *sym)
100 void *libVM = dlopen(vmlibpath, RTLD_LAZY);
101 return libVM ? dlsym(libVM, sym) : NULL;
104 static char *locate_jvm_lib(char *path, size_t n)
110 static int start_vm(jni_env_t *env, int argc, char *argv[])
117 long (JNICALL * create_func)(JavaVM **, void **, void *) = find_jvm_symbol(jvm_lib, "JNI_CreateJavaVM");
120 fprintf(stderr, "could not find JVM creation function\n");
124 memset(&args, 0, sizeof(args));
125 opts = malloc(argc * sizeof(opts[0]));
126 for(i = 0; i < argc; ++i) {
127 opts[i].optionString = argv[i];
128 opts[i].extraInfo = NULL;
131 args.version = JNI_VERSION_1_4;
132 args.nOptions = argc;
134 args.ignoreUnrecognized = JNI_FALSE;
136 ret = create_func(&env->jvm, (void **) &env->jni, &args);
139 fprintf(stderr, "JNI_CreateJavaVM returned errrocode %ld\n" , ret);
146 static void stop_vm(jni_env_t *env)
148 JavaVM *jvm = env->jvm;
149 (*jvm)->DetachCurrentThread(jvm);
150 (*jvm)->DestroyJavaVM(jvm);
153 static int jvm_inited = 0;
154 static jni_env_t env;
155 void (*old_int_handler)(int);
156 void (*old_abrt_handler)(int);
158 static void sig_jvm_destroy_at_exit(int signal)
165 old_abrt_handler(signal);
168 old_int_handler(signal);
174 static void jvm_destroy_at_exit(void)
176 sig_jvm_destroy_at_exit(0);
179 static jni_env_t *get_jvm(void)
186 if(strlen(jvm_lib) == 0) {
187 if(!locate_jvm_lib(jvm_lib, sizeof(jvm_lib))) {
188 fprintf(stderr, "could not find jvm library\n");
193 snprintf(cp_param, sizeof(cp_param), "-Djava.class.path=%s", jar_file);
195 if(!start_vm(&env, sizeof(args) / sizeof(args[0]), args)) {
196 fprintf(stderr, "Couldn't initialize java VM\n");
200 old_int_handler = signal(SIGINT, sig_jvm_destroy_at_exit);
201 old_abrt_handler = signal(SIGABRT, sig_jvm_destroy_at_exit);
202 atexit(jvm_destroy_at_exit);
209 static void check(jni_env_t *env, const char *file, int line)
211 JNIEnv *jni = env->jni;
212 jboolean exc = (*jni)->ExceptionCheck(jni);
214 fprintf(stderr, "%s:%d: ", file, line);
215 (*jni)->ExceptionDescribe(jni);
216 (*jni)->ExceptionClear(jni);
222 #define CHECK(env) check(env, __FILE__, __LINE__)
242 static const struct _mth_info_t mthis[mth_last] = {
243 { "addIntEdge", "(II)V" }, /* public void addIntEdge(int, int); */
244 { "addAffEdge", "(III)V" }, /* public void addAffEdge(int, int, int); */
245 { "setColor", "(II)V" }, /* public void setColor(int, int); */
246 //{ "setDebug", "(ILjava/lang/String;)V" }, /* public void setDebug(int, String); */
247 { "getColor", "(I)I" }, /* public int getColor(int); */
248 { "forbidColor", "(II)V" }, /* public void forbidColor(int, int); */
249 { "coalesce", "()V" }, /* public void coalesce(); */
250 { "dump", "(Ljava/lang/String;)V" }, /* public void dump(String); */
251 { "finish", "()V" } /* public void finish(); */
254 /* public static coalescing.Extern createExtern(java.lang.String, int, int, int); */
255 static const struct _mth_info_t mthi_factory = {
256 "createExtern", "(Ljava/lang/String;III)Lcoalescing/Extern;"
259 struct _be_java_coal_t {
264 jmethodID mth_ids[mth_last];
267 static void jc_call_void(be_java_coal_t *c, int mth_index, ...)
269 JNIEnv *jni = c->env->jni;
270 jmethodID mid = c->mth_ids[mth_index];
274 va_start(args, mth_index);
275 (*jni)->CallVoidMethodV(jni, c->obj, mid, args);
280 static int jc_call_int(be_java_coal_t *c, int mth_index, ...)
282 JNIEnv *jni = c->env->jni;
283 jmethodID mid = c->mth_ids[mth_index];
288 va_start(args, mth_index);
289 res = (*jni)->CallIntMethodV(jni, c->obj, mid, args);
296 be_java_coal_t *be_java_coal_init(const char *graph_name, int n_nodes, int n_regs, int dbg_level)
299 jni_env_t *env = get_jvm();
300 JNIEnv *jni = env->jni;
306 c = malloc(sizeof(c[0]));
307 memset(c, 0, sizeof(c[0]));
310 /* Find the class we are are looking for. */
311 cls = (*jni)->FindClass(jni, cls_name);
314 /* Get the static factory method. */
315 fact = (*jni)->GetStaticMethodID(jni, cls, mthi_factory.name, mthi_factory.sig);
318 /* Call the factory. */
319 str = (*jni)->NewStringUTF(jni, graph_name);
321 c->obj = (*jni)->CallStaticObjectMethod(jni, cls, fact, str, n_nodes, n_regs, dbg_level);
323 c->cls = (*jni)->GetObjectClass(jni, c->obj);
325 /* Reference the created object. */
326 c->obj = (*jni)->NewGlobalRef(jni, c->obj);
329 /* Lookup the member methods of the object. */
330 for(i = 0; i < mth_last; ++i) {
331 c->mth_ids[i] = (*jni)->GetMethodID(jni, c->cls, mthis[i].name, mthis[i].sig);
338 void be_java_coal_destroy(be_java_coal_t *c) {
339 JNIEnv *jni = c->env->jni;
340 jc_call_void(c, mth_finish);
341 (*jni)->DeleteGlobalRef(jni, c->obj);
345 void be_java_coal_add_int_edge(be_java_coal_t *c, int n, int m)
347 jc_call_void(c, mth_add_int_edge, (jint) n, (jint) m);
350 void be_java_coal_add_aff_edge(be_java_coal_t *c, int n, int m, int weight)
352 jc_call_void(c, mth_add_aff_edge, (jint) n, (jint) m, (jint) weight);
355 void be_java_coal_set_color(be_java_coal_t *c, int n, int col)
357 jc_call_void(c, mth_set_color, (jint) n, (jint) col);
360 void be_java_coal_set_debug(be_java_coal_t *c, int n, const char *dbg)
363 JNIEnv *jni = c->env->jni;
364 jmethodID mid = c->mth_ids[mth_set_debug];
367 str = (*jni)->NewStringUTF(jni, dbg);
369 (*jni)->CallVoidMethod(jni, c->obj, mid, (jint) n, str);
374 void be_java_coal_forbid_color(be_java_coal_t *c, int n, int col)
376 jc_call_void(c, mth_forbid_color, (jint) n, (jint) col);
379 void be_java_coal_coalesce(be_java_coal_t *c)
381 jc_call_void(c, mth_coalesce);
384 void be_java_coal_dump(be_java_coal_t *c, const char *fn)
386 JNIEnv *jni = c->env->jni;
387 jmethodID mid = c->mth_ids[mth_dump];
390 str = (*jni)->NewStringUTF(jni, fn);
392 (*jni)->CallVoidMethod(jni, c->obj, mid, str);
396 int be_java_coal_get_color(be_java_coal_t *c, int n)
398 return jc_call_int(c, mth_get_color, (jint) n);
401 void be_java_coal_start_jvm(void)
408 be_java_coal_t *be_java_coal_init(const char *graph_name, int n_nodes, int n_regs, int dbg_level)
410 assert(0 && "use --enable-jvm");
414 void be_java_coal_destroy(be_java_coal_t *c)
416 assert(0 && "use --enable-jvm");
420 void be_java_coal_add_int_edge(be_java_coal_t *c, int n, int m)
422 assert(0 && "use --enable-jvm");
425 void be_java_coal_add_aff_edge(be_java_coal_t *c, int n, int m, int weight)
427 assert(0 && "use --enable-jvm");
430 void be_java_coal_set_color(be_java_coal_t *c, int n, int col)
432 assert(0 && "use --enable-jvm");
435 void be_java_coal_set_debug(be_java_coal_t *c, int n, const char *dbg)
437 assert(0 && "use --enable-jvm");
440 void be_java_coal_forbid_color(be_java_coal_t *c, int n, int col)
442 assert(0 && "use --enable-jvm");
445 void be_java_coal_coalesce(be_java_coal_t *c)
447 assert(0 && "use --enable-jvm");
450 void be_java_coal_dump(be_java_coal_t *c, const char *fn)
452 assert(0 && "use --enable-jvm");
455 int be_java_coal_get_color(be_java_coal_t *c, int n)
457 assert(0 && "use --enable-jvm");
461 void be_java_coal_start_jvm(void)
466 #endif /* WITH_JVM */