12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include "jni.h"
27 #include "jni_util.h"
28
29 extern jfieldID IO_fd_fdID;
30 extern jfieldID IO_handle_fdID;
31 extern jfieldID IO_append_fdID;
32
33 #ifdef _ALLBSD_SOURCE
34 #include <fcntl.h>
35 #ifndef O_SYNC
36 #define O_SYNC O_FSYNC
37 #endif
38 #ifndef O_DSYNC
39 #define O_DSYNC O_FSYNC
40 #endif
41 #elif !defined(O_DSYNC) || !defined(O_SYNC)
42 #define O_SYNC (0x0800)
43 #define O_DSYNC (0x2000)
44 #endif
45
46 /*
47 * IO helper functions
48 */
49
50 jint readSingle(JNIEnv *env, jobject this, jfieldID fid);
51 jint readBytes(JNIEnv *env, jobject this, jbyteArray bytes, jint off,
52 jint len, jfieldID fid);
53 void writeSingle(JNIEnv *env, jobject this, jint byte, jboolean append, jfieldID fid);
54 void writeBytes(JNIEnv *env, jobject this, jbyteArray bytes, jint off,
55 jint len, jboolean append, jfieldID fid);
56 void fileOpen(JNIEnv *env, jobject this, jstring path, jfieldID fid, int flags);
57 void throwFileNotFoundException(JNIEnv *env, jstring path);
58
59 /*
60 * Macros for managing platform strings. The typical usage pattern is:
61 *
62 * WITH_PLATFORM_STRING(env, string, var) {
63 * doSomethingWith(var);
64 * } END_PLATFORM_STRING(env, var);
65 *
66 * where env is the prevailing JNIEnv,
67 * string is a JNI reference to a java.lang.String object, and
68 * var is the char * variable that will point to the string,
69 * after being converted into the platform encoding.
70 *
71 * The related macro WITH_FIELD_PLATFORM_STRING first extracts the string from
72 * a given field of a given object:
73 *
74 * WITH_FIELD_PLATFORM_STRING(env, object, id, var) {
75 * doSomethingWith(var);
110
111 /* Macros for transforming Java Strings into native Unicode strings.
112 * Works analogously to WITH_PLATFORM_STRING.
113 */
114
115 #define WITH_UNICODE_STRING(env, strexp, var) \
116 if (1) { \
117 const jchar *var; \
118 jstring _##var##str = (strexp); \
119 if (_##var##str == NULL) { \
120 JNU_ThrowNullPointerException((env), NULL); \
121 goto _##var##end; \
122 } \
123 var = (*(env))->GetStringChars((env), _##var##str, NULL); \
124 if (var == NULL) goto _##var##end;
125
126 #define END_UNICODE_STRING(env, var) \
127 (*(env))->ReleaseStringChars(env, _##var##str, var); \
128 _##var##end: ; \
129 } else ((void)NULL)
|
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include "jni.h"
27 #include "jni_util.h"
28
29 extern jfieldID IO_fd_fdID;
30 extern jfieldID IO_handle_fdID;
31 extern jfieldID IO_append_fdID;
32 extern jfieldID IO_pgsz_fdID;
33
34 #ifdef _ALLBSD_SOURCE
35 #include <fcntl.h>
36 #ifndef O_SYNC
37 #define O_SYNC O_FSYNC
38 #endif
39 #ifndef O_DSYNC
40 #define O_DSYNC O_FSYNC
41 #endif
42 #elif !defined(O_DSYNC) || !defined(O_SYNC)
43 #define O_SYNC (0x0800)
44 #define O_DSYNC (0x2000)
45 #endif
46
47 /*
48 * IO helper functions
49 */
50
51 jint readSingle(JNIEnv *env, jobject this, jfieldID fid);
52 jint readBytes(JNIEnv *env, jobject this, jbyteArray bytes, jint off,
53 jint len, jfieldID fid);
54 jint readBytesD(JNIEnv *env, jobject this, jbyteArray bytes, jint off,
55 jint len, jfieldID fid, jfieldID pgsz_id);
56 void writeSingle(JNIEnv *env, jobject this, jint byte, jboolean append, jfieldID fid);
57 void writeBytes(JNIEnv *env, jobject this, jbyteArray bytes, jint off,
58 jint len, jboolean append, jfieldID fid);
59 void writeBytesD(JNIEnv *env, jobject this, jbyteArray bytes, jint off,
60 jint len, jboolean append, jfieldID fid, jfieldID pgsz_id);
61 void fileOpen(JNIEnv *env, jobject this, jstring path, jfieldID fid, int flags);
62 void throwFileNotFoundException(JNIEnv *env, jstring path);
63
64 /*
65 * Macros for managing platform strings. The typical usage pattern is:
66 *
67 * WITH_PLATFORM_STRING(env, string, var) {
68 * doSomethingWith(var);
69 * } END_PLATFORM_STRING(env, var);
70 *
71 * where env is the prevailing JNIEnv,
72 * string is a JNI reference to a java.lang.String object, and
73 * var is the char * variable that will point to the string,
74 * after being converted into the platform encoding.
75 *
76 * The related macro WITH_FIELD_PLATFORM_STRING first extracts the string from
77 * a given field of a given object:
78 *
79 * WITH_FIELD_PLATFORM_STRING(env, object, id, var) {
80 * doSomethingWith(var);
115
116 /* Macros for transforming Java Strings into native Unicode strings.
117 * Works analogously to WITH_PLATFORM_STRING.
118 */
119
120 #define WITH_UNICODE_STRING(env, strexp, var) \
121 if (1) { \
122 const jchar *var; \
123 jstring _##var##str = (strexp); \
124 if (_##var##str == NULL) { \
125 JNU_ThrowNullPointerException((env), NULL); \
126 goto _##var##end; \
127 } \
128 var = (*(env))->GetStringChars((env), _##var##str, NULL); \
129 if (var == NULL) goto _##var##end;
130
131 #define END_UNICODE_STRING(env, var) \
132 (*(env))->ReleaseStringChars(env, _##var##str, var); \
133 _##var##end: ; \
134 } else ((void)NULL)
135
136 #define GET_PG_SIZE(this, IO_pgsz_fdID) \
137 (*env)->GetIntField(env, (this), (IO_pgsz_fdID))
|