24 */
25
26 #include <sys/types.h>
27 #include <string.h>
28 #include "jni.h"
29 #include "jni_util.h"
30 #include "jvm.h"
31 #include "jlong.h"
32 #include "sun_nio_ch_NativeThread.h"
33 #include "nio_util.h"
34 #include <signal.h>
35
36 #ifdef __linux__
37 #include <pthread.h>
38 /* Also defined in net/linux_close.c */
39 #define INTERRUPT_SIGNAL (__SIGRTMAX - 2)
40 #elif defined(_AIX)
41 #include <pthread.h>
42 /* Also defined in net/aix_close.c */
43 #define INTERRUPT_SIGNAL (SIGRTMAX - 1)
44 #elif defined(__solaris__)
45 #include <thread.h>
46 #define INTERRUPT_SIGNAL (SIGRTMAX - 2)
47 #elif defined(_ALLBSD_SOURCE)
48 #include <pthread.h>
49 /* Also defined in net/bsd_close.c */
50 #define INTERRUPT_SIGNAL SIGIO
51 #else
52 #error "missing platform-specific definition here"
53 #endif
54
55 static void
56 nullHandler(int sig)
57 {
58 }
59
60 JNIEXPORT void JNICALL
61 Java_sun_nio_ch_NativeThread_init(JNIEnv *env, jclass cl)
62 {
63 /* Install the null handler for INTERRUPT_SIGNAL. This might overwrite the
64 * handler previously installed by <platform>_close.c, but that's okay
65 * since neither handler actually does anything. We install our own
66 * handler here simply out of paranoia; ultimately the two mechanisms
67 * should somehow be unified, perhaps within the VM.
68 */
69
70 sigset_t ss;
71 struct sigaction sa, osa;
72 sa.sa_handler = nullHandler;
73 sa.sa_flags = 0;
74 sigemptyset(&sa.sa_mask);
75 if (sigaction(INTERRUPT_SIGNAL, &sa, &osa) < 0)
76 JNU_ThrowIOExceptionWithLastError(env, "sigaction");
77 }
78
79 JNIEXPORT jlong JNICALL
80 Java_sun_nio_ch_NativeThread_current(JNIEnv *env, jclass cl)
81 {
82 #ifdef __solaris__
83 return (jlong)thr_self();
84 #else
85 return (jlong)pthread_self();
86 #endif
87 }
88
89 JNIEXPORT void JNICALL
90 Java_sun_nio_ch_NativeThread_signal(JNIEnv *env, jclass cl, jlong thread)
91 {
92 int ret;
93 #ifdef __solaris__
94 ret = thr_kill((thread_t)thread, INTERRUPT_SIGNAL);
95 #else
96 ret = pthread_kill((pthread_t)thread, INTERRUPT_SIGNAL);
97 #endif
98 #ifdef MACOSX
99 if (ret != 0 && ret != ESRCH)
100 #else
101 if (ret != 0)
102 #endif
103 JNU_ThrowIOExceptionWithLastError(env, "Thread signal failed");
104 }
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24 */
25
26 #include <sys/types.h>
27 #include <string.h>
28 #include "jni.h"
29 #include "jni_util.h"
30 #include "jvm.h"
31 #include "jlong.h"
32 #include "sun_nio_ch_NativeThread.h"
33 #include "nio_util.h"
34 #include <signal.h>
35
36 #ifdef __linux__
37 #include <pthread.h>
38 /* Also defined in net/linux_close.c */
39 #define INTERRUPT_SIGNAL (__SIGRTMAX - 2)
40 #elif defined(_AIX)
41 #include <pthread.h>
42 /* Also defined in net/aix_close.c */
43 #define INTERRUPT_SIGNAL (SIGRTMAX - 1)
44 #elif defined(_ALLBSD_SOURCE)
45 #include <pthread.h>
46 /* Also defined in net/bsd_close.c */
47 #define INTERRUPT_SIGNAL SIGIO
48 #else
49 #error "missing platform-specific definition here"
50 #endif
51
52 static void
53 nullHandler(int sig)
54 {
55 }
56
57 JNIEXPORT void JNICALL
58 Java_sun_nio_ch_NativeThread_init(JNIEnv *env, jclass cl)
59 {
60 /* Install the null handler for INTERRUPT_SIGNAL. This might overwrite the
61 * handler previously installed by <platform>_close.c, but that's okay
62 * since neither handler actually does anything. We install our own
63 * handler here simply out of paranoia; ultimately the two mechanisms
64 * should somehow be unified, perhaps within the VM.
65 */
66
67 sigset_t ss;
68 struct sigaction sa, osa;
69 sa.sa_handler = nullHandler;
70 sa.sa_flags = 0;
71 sigemptyset(&sa.sa_mask);
72 if (sigaction(INTERRUPT_SIGNAL, &sa, &osa) < 0)
73 JNU_ThrowIOExceptionWithLastError(env, "sigaction");
74 }
75
76 JNIEXPORT jlong JNICALL
77 Java_sun_nio_ch_NativeThread_current(JNIEnv *env, jclass cl)
78 {
79 return (jlong)pthread_self();
80 }
81
82 JNIEXPORT void JNICALL
83 Java_sun_nio_ch_NativeThread_signal(JNIEnv *env, jclass cl, jlong thread)
84 {
85 int ret;
86 ret = pthread_kill((pthread_t)thread, INTERRUPT_SIGNAL);
87 #ifdef MACOSX
88 if (ret != 0 && ret != ESRCH)
89 #else
90 if (ret != 0)
91 #endif
92 JNU_ThrowIOExceptionWithLastError(env, "Thread signal failed");
93 }
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