We've got crablegs! And a special Makefile for Linux and FreeBSD.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@3329 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/util/signal/FreeBSD/Makefile

@@ -14,11 +14,7 @@ MKDIR=mkdir
 
 ROOT=../../../../../../..
 LIBRARIES_PATH=
-ARCH!=uname -p
-OS!=uname -s
 OSINCDIR!=uname -s | tr 'A-Z' 'a-z'
-OSDIR=${ARCH}-${OS}
-INSTALL_PATH=${ROOT}/dist/lib/${OSDIR}
 
 #
 # Parameter and file definitions
@@ -32,15 +28,11 @@ TARGET=libsignal.so
 
 all: ${TARGET}
 
-install: ${TARGET}
-	@${MKDIR} -p ${INSTALL_PATH}
-	cp ${TARGET} ${INSTALL_PATH}
-
 ${TARGET}: com_threerings_util_signal_SignalManager.c
-	@echo "Compiling SignalManager.c
+	@echo "Compiling SignalManager.c"
 	@${CC} ${INCLUDES} -c com_threerings_util_signal_SignalManager.c \
 	    -o com_threerings_util_signal_SignalManager.o
-	@echo Creating libsignal.so
+	@echo "Creating libsignal.so"
 	@${CC} -o ${TARGET} com_threerings_util_signal_SignalManager.o \
 	    ${LIBRARIES} ${LIBRARIES_PATH} -shared
 

src/java/com/threerings/util/signal/Linux/Makefile

@@ -0,0 +1,40 @@
+#
+# $Id: Makefile 3328 2005-02-03 01:16:12Z mdb $
+
+#
+# Executable definitions
+
+CC=gcc
+RM=rm
+CP=cp
+MKDIR=mkdir
+
+#
+# Directory definitions
+
+ROOT=../../../../../../..
+LIBRARIES_PATH=
+OSINCDIR:=$(shell uname -s | tr 'A-Z' 'a-z')
+
+#
+# Parameter and file definitions
+
+INCLUDES=-I.. -I${JAVA_HOME}/include -I${JAVA_HOME}/include/${OSINCDIR}
+LIBRARIES=
+TARGET=libsignal.so
+
+#
+# Target definitions
+
+all: ${TARGET}
+
+${TARGET}: com_threerings_util_signal_SignalManager.c
+	@echo "Compiling SignalManager.c"
+	@${CC} ${INCLUDES} -c com_threerings_util_signal_SignalManager.c \
+	    -o com_threerings_util_signal_SignalManager.o
+	@echo "Creating libsignal.so"
+	@${CC} -o ${TARGET} com_threerings_util_signal_SignalManager.o \
+	    ${LIBRARIES} ${LIBRARIES_PATH} -shared
+
+clean:
+	-${RM} -f *.o ${TARGET}

src/java/com/threerings/util/signal/Linux/com_threerings_util_signal_SignalManager.c

@@ -0,0 +1,96 @@
+/**
+ * $Id: com_threerings_util_signal_SignalManager.c 3327 2005-02-03 01:02:58Z mdb $
+ */
+
+#include <signal.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+
+#include <jni.h>
+#include "com_threerings_util_signal_SignalManager.h"
+
+static int writefd;
+
+typedef void (*sighandler_t)(int);
+static sighandler_t old_handlers[64];
+static sighandler_t handlers[64];
+
+static void
+signal_handler (int signo)
+{
+    write(writefd, &signo, sizeof(signo));
+    signal(SIGINT, signal_handler);
+}
+
+/**
+ * Class:     com_threerings_util_signal_SignalManager
+ * Method:    activateHandler
+ * Signature: (I)V
+ */
+JNIEXPORT void JNICALL
+Java_com_threerings_util_signal_SignalManager_activateHandler (
+    JNIEnv* env, jclass clazz, jint signo)
+{
+    old_handlers[signo] = signal(signo, signal_handler);
+    if (old_handlers[signo] == SIG_ERR) {
+        fprintf(stderr, "Error setting signal handler (%d): %s\n",
+                signo, strerror(errno));
+        old_handlers[signo] = 0;
+    } else {
+        handlers[signo] = signal_handler;
+    }
+}
+
+/**
+ * Class:     com_threerings_util_signal_SignalManager
+ * Method:    deactivateHandler
+ * Signature: (I)V
+ */
+JNIEXPORT void JNICALL
+Java_com_threerings_util_signal_SignalManager_deactivateHandler (
+    JNIEnv* env, jclass clazz, jint signo)
+{
+    if (old_handlers[signo] != 0) {
+        signal(signo, old_handlers[signo]);
+        old_handlers[signo] = 0;
+        handlers[signo] = 0;
+    }
+}
+
+/**
+ * Class:     com_threerings_util_signal_SignalManager
+ * Method:    dispatchSignals
+ * Signature: ()V
+ */
+JNIEXPORT void JNICALL
+Java_com_threerings_util_signal_SignalManager_dispatchSignals (
+    JNIEnv* env, jclass clazz)
+{
+    int filedes[2], readfd;
+    jint signo;
+    jmethodID mid = (*env)->GetStaticMethodID(
+        env, clazz, "signalReceived", "(I)V");
+
+    if (pipe(filedes) < 0) {
+        fprintf(stderr, "Failed to create signal pipe: %s\n", strerror(errno));
+        return;
+    }
+    readfd = filedes[0];
+    writefd = filedes[1];
+
+    while (1) {
+        int got = read(readfd, &signo, sizeof(int));
+        if (got < 0) {
+            fprintf(stderr, "Signal pipe read failed: %s\n", strerror(errno));
+        } else if (got == 0) {
+            fprintf(stderr, "Signal pipe read returned zero bytes.\n");
+        } else {
+            if (signo < 0 || signo >= 64 || handlers[signo] == 0) {
+                fprintf(stderr, "Received bogus signal (%d).\n", signo);
+            } else {
+                (*env)->CallStaticVoidMethod(env, clazz, mid, signo);
+            }
+        }
+    }
+}