[libcrystax] Add posix_memalign implementation

Signed-off-by: Dmitry Moskalchuk <dm@crystax.net>

sources/crystax/src/posix_memalign.c

@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2011-2015 CrystaX.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY CrystaX ''AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CrystaX OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of CrystaX.
+ */
+
+#include <stdlib.h>
+#include <errno.h>
+
+int posix_memalign(void **memptr, size_t alignment, size_t size)
+{
+    void *ptr;
+    size_t acheck;
+
+    if (memptr == NULL || alignment == 0 || size == 0)
+        return EINVAL;
+
+    for (acheck = alignment; acheck > 0; acheck /= 2) {
+        if (acheck == sizeof(void*))
+            break;
+        if (acheck % 2 != 0)
+            return EINVAL;
+    }
+
+    ptr = memalign(alignment, size);
+    if (!ptr)
+        return ENOMEM;
+
+    *memptr = ptr;
+    return 0;
+}

tests/device/crystax-issue1194-posix_memalign/common.mk

@@ -0,0 +1,4 @@
+SRCFILES := main.c
+
+CFLAGS := -Wall -Wextra -Werror
+CFLAGS += -UNDEBUG

tests/device/crystax-issue1194-posix_memalign/host/.gitignore

@@ -0,0 +1,2 @@
+bin/
+obj/

tests/device/crystax-issue1194-posix_memalign/host/GNUmakefile

@@ -0,0 +1,2 @@
+include ../common.mk
+include $(or $(NDK),../../../..)/tests/onhost.mk

tests/device/crystax-issue1194-posix_memalign/jni/Android.mk

@@ -0,0 +1,9 @@
+LOCAL_PATH := $(call my-dir)
+include $(LOCAL_PATH)/../common.mk
+
+include $(CLEAR_VARS)
+LOCAL_MODULE     := test-posix_memalign
+LOCAL_SRC_FILES  := $(SRCFILES)
+LOCAL_C_INCLUDES := $(LOCAL_PATH)
+LOCAL_CFLAGS     := $(CFLAGS)
+include $(BUILD_EXECUTABLE)

tests/device/crystax-issue1194-posix_memalign/jni/Application.mk

@@ -0,0 +1 @@
+APP_ABI := all

tests/device/crystax-issue1194-posix_memalign/jni/main.c

@@ -0,0 +1,40 @@
+#include <assert.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+int main()
+{
+    int rc;
+    void *ptr = NULL;
+
+    rc = posix_memalign(&ptr, 0, 0);
+    assert(rc == EINVAL);
+
+    rc = posix_memalign(&ptr, 1, 0);
+    assert(rc == EINVAL);
+
+    rc = posix_memalign(&ptr, 1, 4);
+    assert(rc == EINVAL);
+
+    rc = posix_memalign(&ptr, 5*sizeof(void*), 4);
+    assert(rc == EINVAL);
+
+    rc = posix_memalign(&ptr, sizeof(void*), 4);
+    assert(rc == 0);
+    assert(ptr != NULL);
+    free(ptr);
+
+    rc = posix_memalign(&ptr, 2*sizeof(void*), 4);
+    assert(rc == 0);
+    assert(ptr != NULL);
+    free(ptr);
+
+    rc = posix_memalign(&ptr, 1024*sizeof(void*), 4);
+    assert(rc == 0);
+    assert(ptr != NULL);
+    free(ptr);
+
+    return 0;
+}