From 9a5bea62fdeb69fda4c0dc73d955ac4648e36f20 Mon Sep 17 00:00:00 2001
From: Michael Bayne <mdb@threerings.net>
Date: Fri, 9 May 2003 03:22:16 +0000
Subject: [PATCH] Possibly working code to cross-compile Windows native DLL.
 Whee!

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@2559 542714f4-19e9-0310-aa3c-eee0fc999fb1
---
 .../util/unsafe/i686-Windows/Makefile         | 49 +++++++++++++++++
 .../com_threerings_util_unsafe_Unsafe.c       | 52 +++++++++++++++++++
 2 files changed, 101 insertions(+)
 create mode 100644 src/java/com/threerings/util/unsafe/i686-Windows/Makefile
 create mode 100644 src/java/com/threerings/util/unsafe/i686-Windows/com_threerings_util_unsafe_Unsafe.c

diff --git a/src/java/com/threerings/util/unsafe/i686-Windows/Makefile b/src/java/com/threerings/util/unsafe/i686-Windows/Makefile
new file mode 100644
index 000000000..930555794
--- /dev/null
+++ b/src/java/com/threerings/util/unsafe/i686-Windows/Makefile
@@ -0,0 +1,49 @@
+#
+# $Id: Makefile,v 1.1 2003/05/09 03:22:16 mdb Exp $
+
+NAME=unsafe
+
+#
+# Executable definitions
+
+CC=i586-mingw32msvc-gcc
+RM=rm
+CP=cp
+MKDIR=mkdir
+DLLWRAP=i586-mingw32msvc-dllwrap
+#
+# Directory definitions
+
+ROOT=../../../../../../..
+INSTALL_PATH=${ROOT}/dist/lib/i686-Windows
+
+#
+# Source files
+
+SRCS = com_threerings_util_unsafe_Unsafe.c
+OBJS = ${SRCS:.c=.o}
+
+#
+# Parameter and file definitions
+
+INCLUDES=
+CFLAGS=-I.. -I${JAVA_HOME}/include -I${JAVA_HOME}/include/linux
+
+LDFLAGS=-L/usr/X11R6/lib
+LIBS=
+TARGET=${NAME}.dll
+INSTALL_TARGET=${INSTALL_PATH}/${TARGET}
+
+#
+# Target definitions
+
+all: ${INSTALL_TARGET}
+
+${INSTALL_TARGET}: ${OBJS}
+	@${MKDIR} -p ${INSTALL_PATH}
+	${DLLWRAP} --output-def ${NAME}.def --add-stdcall-alias \
+		-o ${INSTALL_TARGET} -s ${OBJS}
+
+clean:
+	-${RM} ${OBJS}
+	-${RM} ${INSTALL_TARGET}
diff --git a/src/java/com/threerings/util/unsafe/i686-Windows/com_threerings_util_unsafe_Unsafe.c b/src/java/com/threerings/util/unsafe/i686-Windows/com_threerings_util_unsafe_Unsafe.c
new file mode 100644
index 000000000..6b3fbbe2d
--- /dev/null
+++ b/src/java/com/threerings/util/unsafe/i686-Windows/com_threerings_util_unsafe_Unsafe.c
@@ -0,0 +1,52 @@
+/*
+ * $Id: com_threerings_util_unsafe_Unsafe.c,v 1.1 2003/05/09 03:22:16 mdb Exp $
+ */
+
+#include <stdio.h>
+#include <jni.h>
+#include <jvmpi.h>
+
+#include "com_threerings_util_unsafe_Unsafe.h"
+
+/* global jvmpi interface pointer */
+static JVMPI_Interface* jvmpi;
+
+JNIEXPORT void JNICALL
+Java_com_threerings_util_unsafe_Unsafe_enableGC (JNIEnv* env, jclass clazz)
+{
+    fprintf(stderr, "Reenabling GC.\n");
+    jvmpi->EnableGC();
+}
+
+JNIEXPORT void JNICALL
+Java_com_threerings_util_unsafe_Unsafe_disableGC (JNIEnv* env, jclass clazz)
+{
+    fprintf(stderr, "Disabling GC.\n");
+    jvmpi->DisableGC();
+}
+
+JNIEXPORT void JNICALL
+Java_com_threerings_util_unsafe_Unsafe_nativeSleep (
+    JNIEnv* env, jclass clazz, jint millis)
+{
+    /* not supported */
+}
+
+JNIEXPORT jboolean JNICALL
+Java_com_threerings_util_unsafe_Unsafe_init (JNIEnv* env, jclass clazz)
+{
+    JavaVM* jvm;
+
+    if ((*env)->GetJavaVM(env, &jvm) > 0) {
+        fprintf(stderr, "Failed to get JavaVM from env.\n");
+        return JNI_FALSE;
+    }
+
+    /* get jvmpi interface pointer */
+    if (((*jvm)->GetEnv(jvm, (void**)&jvmpi, JVMPI_VERSION_1)) < 0) {
+        fprintf(stderr, "Failed to get JVMPI from JavaVM.\n");
+        return JNI_FALSE;
+    }
+
+    return JNI_TRUE;
+}