From: Abramo Bagnara <abramo@alsa-project.org>
Date: Wed, 21 Feb 2001 21:59:35 +0000 (+0000)
Subject: Transformed PAGE_SIZE in sysconf(_SC_PAGE_SIZE)
X-Git-Tag: v1.0.3~943
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=c663f4f4f700529fca28c71ec39d77e35a4d6508;p=alsa-lib.git

Transformed PAGE_SIZE in sysconf(_SC_PAGE_SIZE)
---

diff --git a/include/local.h b/include/local.h
index 38b1b22e..ef8c5dfe 100644
--- a/include/local.h
+++ b/include/local.h
@@ -68,4 +68,7 @@ typedef enum _snd_set_mode snd_set_mode_t;
 #define SND_TRY ((snd_set_mode_t) SND_TRY)
 #define SND_TEST ((snd_set_mode_t) SND_TEST)
 
+size_t page_align(size_t size);
+size_t page_size(void);
+
 #endif
diff --git a/src/pcm/pcm_hw.c b/src/pcm/pcm_hw.c
index d38e53b1..8c4714ec 100644
--- a/src/pcm/pcm_hw.c
+++ b/src/pcm/pcm_hw.c
@@ -28,7 +28,6 @@
 #include <sys/ioctl.h>
 #include <sys/mman.h>
 #include <sys/shm.h>
-#include <asm/page.h>
 #include "pcm_local.h"
 #include "../control/control_local.h"
 
@@ -36,10 +35,6 @@
 #define F_SETSIG 10
 #endif
 
-#ifndef PAGE_ALIGN
-#define PAGE_ALIGN(addr)        (((addr)+PAGE_SIZE-1)&PAGE_MASK)
-#endif
-
 typedef struct {
 	int fd;
 	int card, device, subdevice;
@@ -366,7 +361,7 @@ static int snd_pcm_hw_mmap_status(snd_pcm_t *pcm)
 {
 	snd_pcm_hw_t *hw = pcm->private_data;
 	void *ptr;
-	ptr = mmap(NULL, PAGE_ALIGN(sizeof(struct sndrv_pcm_mmap_status)), PROT_READ, MAP_FILE|MAP_SHARED, 
+	ptr = mmap(NULL, page_align(sizeof(struct sndrv_pcm_mmap_status)), PROT_READ, MAP_FILE|MAP_SHARED, 
 		   hw->fd, SND_PCM_MMAP_OFFSET_STATUS);
 	if (ptr == MAP_FAILED || ptr == NULL) {
 		SYSERR("status mmap failed");
@@ -381,7 +376,7 @@ static int snd_pcm_hw_mmap_control(snd_pcm_t *pcm)
 {
 	snd_pcm_hw_t *hw = pcm->private_data;
 	void *ptr;
-	ptr = mmap(NULL, PAGE_ALIGN(sizeof(struct sndrv_pcm_mmap_control)), PROT_READ|PROT_WRITE, MAP_FILE|MAP_SHARED, 
+	ptr = mmap(NULL, page_align(sizeof(struct sndrv_pcm_mmap_control)), PROT_READ|PROT_WRITE, MAP_FILE|MAP_SHARED, 
 		   hw->fd, SND_PCM_MMAP_OFFSET_CONTROL);
 	if (ptr == MAP_FAILED || ptr == NULL) {
 		SYSERR("control mmap failed");
@@ -395,7 +390,7 @@ static int snd_pcm_hw_mmap_control(snd_pcm_t *pcm)
 static int snd_pcm_hw_munmap_status(snd_pcm_t *pcm)
 {
 	snd_pcm_hw_t *hw = pcm->private_data;
-	if (munmap((void*)hw->mmap_status, PAGE_ALIGN(sizeof(*hw->mmap_status))) < 0) {
+	if (munmap((void*)hw->mmap_status, page_align(sizeof(*hw->mmap_status))) < 0) {
 		SYSERR("status munmap failed");
 		return -errno;
 	}
@@ -405,7 +400,7 @@ static int snd_pcm_hw_munmap_status(snd_pcm_t *pcm)
 static int snd_pcm_hw_munmap_control(snd_pcm_t *pcm)
 {
 	snd_pcm_hw_t *hw = pcm->private_data;
-	if (munmap(hw->mmap_control, PAGE_ALIGN(sizeof(*hw->mmap_control))) < 0) {
+	if (munmap(hw->mmap_control, page_align(sizeof(*hw->mmap_control))) < 0) {
 		SYSERR("control munmap failed");
 		return -errno;
 	}
diff --git a/src/pcm/pcm_mmap.c b/src/pcm/pcm_mmap.c
index 1e4cd20d..1eee430b 100644
--- a/src/pcm/pcm_mmap.c
+++ b/src/pcm/pcm_mmap.c
@@ -24,14 +24,25 @@
 #include <sys/poll.h>
 #include <sys/mman.h>
 #include <sys/shm.h>
-#include <asm/page.h>
 #include "pcm_local.h"
 
+size_t page_size(void)
+{
+	long s = sysconf(_SC_PAGE_SIZE);
+	assert(s > 0);
+	return s;
+}
 
-#ifndef PAGE_ALIGN
-#define PAGE_ALIGN(addr)        (((addr)+PAGE_SIZE-1)&PAGE_MASK)
-#endif
-
+size_t page_align(size_t size)
+{
+	size_t r;
+	long psz = sysconf(_SC_PAGE_SIZE);
+	assert(psz > 0);
+	r = size % psz;
+	if (r)
+		return size + psz - r;
+	return size;
+}
 
 const snd_pcm_channel_area_t *snd_pcm_mmap_running_areas(snd_pcm_t *pcm)
 {
@@ -304,7 +315,7 @@ int snd_pcm_mmap(snd_pcm_t *pcm)
 					size = s;
 			}
 			size = (size + 7) / 8;
-			size = PAGE_ALIGN(size);
+			size = page_align(size);
 			switch (i->type) {
 			case SND_PCM_AREA_MMAP:
 				ptr = mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_FILE|MAP_SHARED, i->u.mmap.fd, i->u.mmap.offset);
@@ -384,7 +395,7 @@ int snd_pcm_munmap(snd_pcm_t *pcm)
 				size = s;
 		}
 		size = (size + 7) / 8;
-		size = PAGE_ALIGN(size);
+		size = page_align(size);
 		switch (i->type) {
 		case SND_PCM_AREA_MMAP:
 #if 0
diff --git a/src/rawmidi/rawmidi.c b/src/rawmidi/rawmidi.c
index 7dd902e0..5297c648 100644
--- a/src/rawmidi/rawmidi.c
+++ b/src/rawmidi/rawmidi.c
@@ -25,7 +25,6 @@
 #include <unistd.h>
 #include <string.h>
 #include <dlfcn.h>
-#include <asm/page.h>
 #include "rawmidi_local.h"
 
 const char *snd_rawmidi_name(snd_rawmidi_t *rawmidi)
@@ -160,7 +159,7 @@ int snd_rawmidi_params_default(snd_rawmidi_t *rmidi, snd_rawmidi_params_t *param
 {
 	assert(rmidi);
 	assert(params);
-	params->buffer_size = PAGE_SIZE;
+	params->buffer_size = page_size();
 	params->avail_min = 1;
 	params->no_active_sensing = 0;
 	return 0;