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authorMattias Andrée <maandree@operamail.com>2014-09-05 01:37:06 +0200
committerMattias Andrée <maandree@operamail.com>2014-09-05 01:37:06 +0200
commit06dc6a835bd8984c48fe7b00028d708194bf43d3 (patch)
treee4f80631ba0ced88c52790b1db5e043e82d26457
parentm + implement c code for ramp (diff)
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implement c code for partition
Signed-off-by: Mattias Andrée <maandree@operamail.com>
-rw-r--r--src/libgamma_Partition.c74
1 files changed, 71 insertions, 3 deletions
diff --git a/src/libgamma_Partition.c b/src/libgamma_Partition.c
index 4cb1cdc..65bf2e0 100644
--- a/src/libgamma_Partition.c
+++ b/src/libgamma_Partition.c
@@ -17,12 +17,53 @@
*/
#include "libgamma_Partition.h"
+#include <errno.h>
+#include <stdlib.h>
+
#include <libgamma.h>
#define J JNIEnv* env, jclass class
+/**
+ * Make a failure-return.
+ *
+ * @param error_code The error code returned from the failing function or zero to read `errno`.
+ * @return The object to return.
+ */
+static jlongArray fail(JNIEnv* env, int error_code)
+{
+ jlongArray rc = (*env)->NewLongArray(env, 3);
+ jlong e, z = 0;
+ if ((error_code == LIBGAMMA_ERRNO_SET) || !error_code)
+ error_code = errno;
+ e = (jlong)error_code;
+ (*env)->SetLongArrayRegion(env, rc, 0, 1, &z);
+ (*env)->SetLongArrayRegion(env, rc, 1, 1, &z);
+ (*env)->SetLongArrayRegion(env, rc, 2, 1, &e);
+ return rc;
+}
+
+
+/**
+ * Make a success-return.
+ *
+ * @param state The native object.
+ * @param count The subelement count.
+ * @return The object to return.
+ */
+static jlongArray ok(JNIEnv* env, void* state, size_t count)
+{
+ jlong a = (jlong)(size_t)state;
+ jlong b = (jlong)count, z = 0;
+ jlongArray rc = (*env)->NewLongArray(env, 3);
+ (*env)->SetLongArrayRegion(env, rc, 0, 1, &a);
+ (*env)->SetLongArrayRegion(env, rc, 1, 1, &b);
+ (*env)->SetLongArrayRegion(env, rc, 2, 1, &z);
+ return rc;
+}
+
/**
* Create a partition state.
@@ -33,7 +74,19 @@
* Element 1: The value for {@link #crtcs_available}
* Element 2: Error code, zero on success.
*/
-jlongArray Java_libgamma_Partition_libgamma_1partition_1create(J, jlong site, jint partition);
+jlongArray Java_libgamma_Partition_libgamma_1partition_1create(J, jlong site, jint partition)
+{
+ libgamma_partition_state_t* state = malloc(sizeof(libgamma_partition_state_t));
+ void* super = (void*)(size_t)site;
+ int r;
+ if (state == NULL)
+ return fail(env, 0);
+ r = libgamma_partition_initialise(state, super, partition);
+ if (r != 0)
+ return fail(env, r);
+ return ok(env, state, state->crtcs_available);
+ (void) class;
+}
/**
@@ -42,7 +95,13 @@ jlongArray Java_libgamma_Partition_libgamma_1partition_1create(J, jlong site, ji
*
* @param address The partition state.
*/
-void Java_libgamma_Partition_libgamma_1partition_1free(J, jlong address);
+void Java_libgamma_Partition_libgamma_1partition_1free(J, jlong address)
+{
+ void* this = (void*)(size_t)address;
+ libgamma_partition_free(this);
+ (void) env;
+ (void) class;
+}
/**
@@ -51,5 +110,14 @@ void Java_libgamma_Partition_libgamma_1partition_1free(J, jlong address);
* @param address The partition state.
* @return Zero on success, and error code on failure.
*/
-jint Java_libgamma_Partition_libgamma_1partition_1restore(J, jlong address);
+jint Java_libgamma_Partition_libgamma_1partition_1restore(J, jlong address)
+{
+ void* this = (void*)(size_t)address;
+ int r = libgamma_partition_restore(this);
+ if (r != 0)
+ return r == LIBGAMMA_ERRNO_SET ? errno : r;
+ return 0;
+ (void) env;
+ (void) class;
+}