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21 
22 
23 
24 // MARKER(update_precomp.py): autogen include statement, do not remove
25 #include "precompiled_bridges.hxx"
26 
27 #include "jvmaccess/virtualmachine.hxx"
28 #include "rtl/byteseq.h"
29 #include "rtl/byteseq.hxx"
30 #include "rtl/memory.h"
31 #include "rtl/ref.hxx"
32 #include "sal/types.h"
33 #include "uno/threadpool.h"
34 
35 #include "jni.h"
36 
37 #include <new>
38 
39 /* The native implementation part of
40  * jurt/com/sun/star/lib/uno/environments/remote/NativeThreadPool.java.
41  */
42 
43 namespace {
44 
45 struct Pool {
46     Pool(rtl::Reference< jvmaccess::VirtualMachine > const & theVirtualMachine,
47          jmethodID theExecute, uno_ThreadPool thePool):
48         virtualMachine(theVirtualMachine), execute(theExecute), pool(thePool) {}
49 
50     rtl::Reference< jvmaccess::VirtualMachine > virtualMachine;
51     jmethodID execute;
52     uno_ThreadPool pool;
53 };
54 
55 struct Job {
56     Job(Pool * thePool, jobject theJob): pool(thePool), job(theJob) {}
57 
58     Pool * pool;
59     jobject job;
60 };
61 
62 void throwOutOfMemory(JNIEnv * env) {
63     jclass c = env->FindClass("java/lang/OutOfMemoryError");
64     if (c != 0) {
65         env->ThrowNew(c, "");
66     }
67 }
68 
69 }
70 
71 extern "C" {
72 
73 static void SAL_CALL executeRequest(void * data) {
74     Job * job = static_cast< Job * >(data);
75     try {
76         jvmaccess::VirtualMachine::AttachGuard guard(job->pool->virtualMachine);
77         JNIEnv * env = guard.getEnvironment();
78         // Failure of the following Job.execute Java call is ignored; if that
79         // call fails, it should be due to a java.lang.Error, which is not
80         // handled well, anyway:
81         env->CallObjectMethod(job->job, job->pool->execute);
82         env->DeleteGlobalRef(job->job);
83         delete job;
84     } catch (jvmaccess::VirtualMachine::AttachGuard::CreationException &) {
85         //TODO: DeleteGlobalRef(job->job)
86         delete job;
87     }
88 }
89 
90 }
91 
92 extern "C" JNIEXPORT jbyteArray JNICALL
93 Java_com_sun_star_lib_uno_environments_remote_NativeThreadPool_threadId(
94     JNIEnv * env, jclass) SAL_THROW_EXTERN_C()
95 {
96     sal_Sequence * s = 0;
97     uno_getIdOfCurrentThread(&s); //TODO: out of memory
98     uno_releaseIdFromCurrentThread();
99     rtl::ByteSequence seq(s);
100     rtl_byte_sequence_release(s);
101     sal_Int32 n = seq.getLength();
102     jbyteArray a = env->NewByteArray(n);
103         // sal_Int32 and jsize are compatible here
104     if (a == 0) {
105         return 0;
106     }
107     void * p = env->GetPrimitiveArrayCritical(a, 0);
108     if (p == 0) {
109         return 0;
110     }
111     rtl_copyMemory(p, seq.getConstArray(), n);
112         // sal_Int8 and jbyte ought to be compatible
113     env->ReleasePrimitiveArrayCritical(a, p, 0);
114     return a;
115 }
116 
117 extern "C" JNIEXPORT jlong JNICALL
118 Java_com_sun_star_lib_uno_environments_remote_NativeThreadPool_create(
119     JNIEnv * env, jclass) SAL_THROW_EXTERN_C()
120 {
121     JavaVM * vm;
122     if (env->GetJavaVM(&vm) != JNI_OK) { //TODO: no Java exception raised?
123         jclass c = env->FindClass("java/lang/RuntimeException");
124         if (c != 0) {
125             env->ThrowNew(c, "JNI GetJavaVM failed");
126         }
127         return 0;
128     }
129     jclass c = env->FindClass("com/sun/star/lib/uno/environments/remote/Job");
130     if (c == 0) {
131         return 0;
132     }
133     jmethodID execute = env->GetMethodID(c, "execute", "()Ljava/lang/Object;");
134     if (execute == 0) {
135         return 0;
136     }
137     try {
138         return reinterpret_cast< jlong >(new Pool(
139             new jvmaccess::VirtualMachine(vm, env->GetVersion(), false, env),
140             execute, uno_threadpool_create()));
141     } catch (std::bad_alloc) {
142         throwOutOfMemory(env);
143         return 0;
144     }
145 }
146 
147 extern "C" JNIEXPORT void JNICALL
148 Java_com_sun_star_lib_uno_environments_remote_NativeThreadPool_attach(
149     JNIEnv *, jclass, jlong pool) SAL_THROW_EXTERN_C()
150 {
151     uno_threadpool_attach(reinterpret_cast< Pool * >(pool)->pool);
152 }
153 
154 extern "C" JNIEXPORT jobject JNICALL
155 Java_com_sun_star_lib_uno_environments_remote_NativeThreadPool_enter(
156     JNIEnv * env, jclass, jlong pool) SAL_THROW_EXTERN_C()
157 {
158     jobject job;
159     uno_threadpool_enter(
160         reinterpret_cast< Pool * >(pool)->pool,
161         reinterpret_cast< void ** >(&job));
162     if (job == 0) {
163         return 0;
164     }
165     jobject ref = env->NewLocalRef(job);
166     env->DeleteGlobalRef(job);
167     return ref;
168 }
169 
170 extern "C" JNIEXPORT void JNICALL
171 Java_com_sun_star_lib_uno_environments_remote_NativeThreadPool_detach(
172     JNIEnv *, jclass, jlong pool) SAL_THROW_EXTERN_C()
173 {
174     uno_threadpool_detach(reinterpret_cast< Pool * >(pool)->pool);
175 }
176 
177 extern "C" JNIEXPORT void JNICALL
178 Java_com_sun_star_lib_uno_environments_remote_NativeThreadPool_putJob(
179     JNIEnv * env, jclass, jlong pool, jbyteArray threadId, jobject job,
180     jboolean request, jboolean oneWay) SAL_THROW_EXTERN_C()
181 {
182     void * s = env->GetPrimitiveArrayCritical(threadId, 0);
183     if (s == 0) {
184         return;
185     }
186     rtl::ByteSequence seq(
187         static_cast< sal_Int8 * >(s), env->GetArrayLength(threadId));
188         // sal_Int8 and jbyte ought to be compatible; sal_Int32 and jsize are
189         // compatible here
190         //TODO: out of memory
191     env->ReleasePrimitiveArrayCritical(threadId, s, JNI_ABORT);
192     Pool * p = reinterpret_cast< Pool * >(pool);
193     jobject ref = env->NewGlobalRef(job);
194     if (ref == 0) {
195         return;
196     }
197     Job * j = 0;
198     if (request) {
199         j = new(std::nothrow) Job(p, ref);
200         if (j == 0) {
201             env->DeleteGlobalRef(ref);
202             throwOutOfMemory(env);
203             return;
204         }
205     }
206     uno_threadpool_putJob(
207         p->pool, seq.getHandle(),
208         request ? static_cast< void * >(j) : static_cast< void * >(ref),
209         request ? executeRequest : 0, oneWay);
210 }
211 
212 extern "C" JNIEXPORT void JNICALL
213 Java_com_sun_star_lib_uno_environments_remote_NativeThreadPool_dispose(
214     JNIEnv *, jclass, jlong pool) SAL_THROW_EXTERN_C()
215 {
216     uno_threadpool_dispose(reinterpret_cast< Pool * >(pool)->pool);
217 }
218 
219 extern "C" JNIEXPORT void JNICALL
220 Java_com_sun_star_lib_uno_environments_remote_NativeThreadPool_destroy(
221     JNIEnv *, jclass, jlong pool) SAL_THROW_EXTERN_C()
222 {
223     Pool * p = reinterpret_cast< Pool * >(pool);
224     uno_threadpool_destroy(p->pool);
225     delete p;
226 }
227