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 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 {
62 Ugly code to retrieve the JVM dll/so file.
68 static void *find_jvm_symbol(const char *vmlibpath, const char *sym)
70 HINSTANCE hVM = LoadLibrary(vmlibpath);
71 return hVM ? GetProcAddress(hVM, sym) : NULL;
74 #define JRE_KEY "SOFTWARE\\JavaSoft\\Java Development Kit"
76 static char *locate_jvm_lib(char *path, size_t path_len)
80 DWORD version_len = sizeof(version);
81 DWORD dwPathLen = path_len;
84 RegOpenKeyEx(HKEY_LOCAL_MACHINE, JRE_KEY, 0, KEY_QUERY_VALUE, &hKey);
85 RegQueryValueEx(hKey, "CurrentVersion", NULL, NULL, (LPBYTE) version, &version_len);
88 _snprintf(buf, sizeof(buf), JRE_KEY "\\%s", version);
89 RegOpenKeyEx(HKEY_LOCAL_MACHINE, buf, 0, KEY_QUERY_VALUE, &hKey);
90 RegQueryValueEx(hKey, "JavaHome", NULL, NULL, (LPBYTE) path, &dwPathLen);
93 strncat(path, "\\jre\\bin\\server\\jvm.dll", path_len);
99 static void *find_jvm_symbol(const char *vmlibpath, const char *sym)
101 void *libVM = dlopen(vmlibpath, RTLD_LAZY);
102 return libVM ? dlsym(libVM, sym) : NULL;
105 static char *locate_jvm_lib(char *path, size_t n)
112 static int start_vm(jni_env_t *env, int argc, char *argv[])
120 long (JNICALL * create_func)(JavaVM **, void **, void *) = find_jvm_symbol(jvm_lib, "JNI_CreateJavaVM");
123 fprintf(stderr, "could not find JVM creation function\n");
127 memset(&args, 0, sizeof(args));
128 opts = malloc(argc * sizeof(opts[0]));
129 for(i = 0; i < argc; ++i) {
130 opts[i].optionString = argv[i];
131 opts[i].extraInfo = NULL;
134 args.version = JNI_VERSION_1_4;
135 args.nOptions = argc;
137 args.ignoreUnrecognized = JNI_FALSE;
139 ret = create_func(&env->jvm, (void **) &env->jni, &args);
147 static void stop_vm(jni_env_t *env)
149 JavaVM *jvm = env->jvm;
150 (*jvm)->DetachCurrentThread(jvm);
151 (*jvm)->DestroyJavaVM(jvm);
154 static int jvm_inited = 0;
155 static jni_env_t env;
157 static void jvm_destroy_at_exit(void)
163 static jni_env_t *get_jvm(void)
170 if(strlen(jvm_lib) == 0) {
171 if(!locate_jvm_lib(jvm_lib, sizeof(jvm_lib))) {
172 fprintf(stderr, "could not find jvm library\n");
177 snprintf(cp_param, sizeof(cp_param), "-Djava.class.path=%s", jar_file);
179 start_vm(&env, sizeof(args) / sizeof(args[0]), args);
181 atexit(jvm_destroy_at_exit);
187 static void check(jni_env_t *env, const char *file, int line)
189 JNIEnv *jni = env->jni;
190 jboolean exc = (*jni)->ExceptionCheck(jni);
192 fprintf(stderr, "%s:%d: ", file, line);
193 (*jni)->ExceptionDescribe(jni);
194 (*jni)->ExceptionClear(jni);
200 #define CHECK(env) check(env, __FILE__, __LINE__)
218 static const struct _mth_info_t mthis[mth_last] = {
219 { "addIntEdge", "(II)V" }, /* public void addIntEdge(int, int); */
220 { "addAffEdge", "(III)V" }, /* public void addAffEdge(int, int, int); */
221 { "setColor", "(II)V" }, /* public void setColor(int, int); */
222 { "getColor", "(I)I" }, /* public int getColor(int); */
223 { "forbidColor", "(II)V" }, /* public void forbidColor(int, int); */
224 { "coalesce", "()V" }, /* public void coalesce(); */
225 { "dump", "(Ljava/lang/String;)V" } /* public void dump(String); */
228 /* public static coalescing.Extern createExtern(java.lang.String, int, int, int); */
229 static const struct _mth_info_t mthi_factory = {
230 "createExtern", "(Ljava/lang/String;III)Lcoalescing/Extern;"
233 struct _java_coal_t {
238 jmethodID mth_ids[mth_last];
241 static void jc_call_void(java_coal_t *c, int mth_index, ...)
243 JNIEnv *jni = c->env->jni;
244 jmethodID mid = c->mth_ids[mth_index];
248 va_start(args, mth_index);
249 (*jni)->CallVoidMethodV(jni, c->obj, mid, args);
254 static int jc_call_int(java_coal_t *c, int mth_index, ...)
256 JNIEnv *jni = c->env->jni;
257 jmethodID mid = c->mth_ids[mth_index];
262 va_start(args, mth_index);
263 res = (*jni)->CallIntMethodV(jni, c->obj, mid, args);
270 java_coal_t *java_coal_init(const char *graph_name, int n_nodes, int n_regs, int dbg_level)
273 jni_env_t *env = get_jvm();
274 JNIEnv *jni = env->jni;
280 c = malloc(sizeof(c[0]));
281 memset(c, 0, sizeof(c[0]));
284 /* Find the class we are are looking for. */
285 cls = (*jni)->FindClass(jni, cls_name);
288 /* Get the static factory method. */
289 fact = (*jni)->GetStaticMethodID(jni, cls, mthi_factory.name, mthi_factory.sig);
292 /* Call the factory. */
293 str = (*jni)->NewStringUTF(jni, graph_name);
295 c->obj = (*jni)->CallStaticObjectMethod(jni, cls, fact, str, n_nodes, n_regs, dbg_level);
297 c->cls = (*jni)->GetObjectClass(jni, c->obj);
299 /* Reference the created object. */
300 c->obj = (*jni)->NewGlobalRef(jni, c->obj);
303 /* Lookup the member methods of the object. */
304 for(i = 0; i < mth_last; ++i) {
305 c->mth_ids[i] = (*jni)->GetMethodID(jni, c->cls, mthis[i].name, mthis[i].sig);
312 void java_coal_destroy(java_coal_t *c) {
313 JNIEnv *jni = c->env->jni;
314 (*jni)->DeleteGlobalRef(jni, c->obj);
318 void java_coal_add_int_edge(java_coal_t *c, int n, int m)
320 jc_call_void(c, mth_add_int_edge, (jint) n, (jint) m);
323 void java_coal_add_aff_edge(java_coal_t *c, int n, int m, int weight)
325 jc_call_void(c, mth_add_aff_edge, (jint) n, (jint) m, (jint) weight);
328 void java_coal_set_color(java_coal_t *c, int n, int col)
330 jc_call_void(c, mth_set_color, (jint) n, (jint) col);
333 void java_coal_forbid_color(java_coal_t *c, int n, int col)
335 jc_call_void(c, mth_forbid_color, (jint) n, (jint) col);
338 void java_coal_coalesce(java_coal_t *c)
340 jc_call_void(c, mth_coalesce);
343 void java_coal_dump(java_coal_t *c, const char *fn)
345 JNIEnv *jni = c->env->jni;
346 jmethodID mid = c->mth_ids[mth_dump];
349 str = (*jni)->NewStringUTF(jni, fn);
351 (*jni)->CallVoidMethod(jni, c->obj, mid, str);
355 int java_coal_get_color(java_coal_t *c, int n)
357 return jc_call_int(c, mth_get_color, (jint) n);
362 java_coal_t *java_coal_init(const char *graph_name, int n_nodes, int n_regs, int dbg_level)
364 assert(0 && "use --enable-jvm");
368 void java_coal_destroy(java_coal_t *c)
370 assert(0 && "use --enable-jvm");
374 void java_coal_add_int_edge(java_coal_t *c, int n, int m)
376 assert(0 && "use --enable-jvm");
379 void java_coal_add_aff_edge(java_coal_t *c, int n, int m, int weight)
381 assert(0 && "use --enable-jvm");
384 void java_coal_set_color(java_coal_t *c, int n, int col)
386 assert(0 && "use --enable-jvm");
389 void java_coal_forbid_color(java_coal_t *c, int n, int col)
391 assert(0 && "use --enable-jvm");
394 void java_coal_coalesce(java_coal_t *c)
396 assert(0 && "use --enable-jvm");
399 void java_coal_dump(java_coal_t *c, const char *fn)
401 assert(0 && "use --enable-jvm");
404 int java_coal_get_color(java_coal_t *c, int n)
406 assert(0 && "use --enable-jvm");
411 #endif /* WITH_JVM */