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Added flush of output on exit. On some UNIX's using the native library

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resulted in no output when the output was redirected until this was done.
Redirection is important because runtest redirects test output.

Added support for numerous environment variables which make it easier
to run a multi-node system using a single executable and to tailor
the size of the workspace and heap.
This commit is contained in:
Joel Sherrill
1995-08-11 14:30:27 +00:00
parent aa9f19454a
commit c1403ef153
4 changed files with 65 additions and 48 deletions
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86
c/src/lib/libbsp/unix/posix/startup/bspstart.c
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@@ -33,7 +33,6 @@
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
#include <bsp.h>
#include <libcsupport.h>
@@ -58,11 +57,13 @@ int rtems_argc;
char **rtems_argv;
char **rtems_envp;
/*
* May be overridden by RTEMS_WORKSPACE_SIZE and RTEMS_HEAPSPACE_SIZE
* environment variables; see below.
*/
#define WORKSPACE_SIZE (WORKSPACE_MB * (1024 * 1024))
#define HEAPSPACE_SIZE (HEAPSPACE_MB * (1024 * 1024))
rtems_unsigned8 MY_WORK_SPACE[ WORKSPACE_SIZE ] CPU_STRUCTURE_ALIGNMENT;
#define DEFAULT_WORKSPACE_SIZE (WORKSPACE_MB * (1024 * 1024))
#define DEFAULT_HEAPSPACE_SIZE (HEAPSPACE_MB * (1024 * 1024))
/*
* Amount to increment itimer by each pass
@@ -102,7 +103,11 @@ bsp_libc_init(void)
{
void *heap_start;
Heap_size = HEAPSPACE_SIZE;
if (getenv("RTEMS_HEAPSPACE_SIZE"))
Heap_size = strtol(getenv("RTEMS_HEAPSPACE_SIZE"), 0, 0);
else
Heap_size = DEFAULT_HEAPSPACE_SIZE;
heap_start = 0;
RTEMS_Malloc_Initialize((void *)heap_start, Heap_size, 1024 * 1024);
@@ -185,11 +190,7 @@ bsp_pretasking_hook(void)
void
bsp_start(void)
{
struct stat stat_buf;
char buf[256];
char node[6];
char *home;
int fd;
unsigned32 workspace_ptr;
/*
* Copy the table
@@ -198,36 +199,30 @@ bsp_start(void)
BSP_Configuration = Configuration;
/*
* If the node number is -1 then the application better provide
* it through the file $HOME/rtems_node
* If the node number is -1 then the application better provide
* it through environment variables RTEMS_NODE.
* Ditto for RTEMS_MAXIMUM_NODES
*/
BSP_Multiprocessing.node = -1;
if (BSP_Configuration.User_multiprocessing_table) {
if (BSP_Configuration.User_multiprocessing_table->node == -1) {
home = getenv("HOME");
sprintf(buf, "%s/%s", home, "rtems_node");
if ((stat(buf, &stat_buf)) == 0) {
fd = open(buf, O_RDONLY);
read(fd, node, 5);
close(fd);
unlink(buf);
BSP_Multiprocessing = *BSP_Configuration.User_multiprocessing_table;
BSP_Multiprocessing.node = atoi(node);
BSP_Configuration.User_multiprocessing_table = &BSP_Multiprocessing;
char *p;
/* make a copy for possible editing */
BSP_Multiprocessing = *BSP_Configuration.User_multiprocessing_table;
BSP_Configuration.User_multiprocessing_table = &BSP_Multiprocessing;
if (BSP_Multiprocessing.node == -1)
{
p = getenv("RTEMS_NODE");
BSP_Multiprocessing.node = p ? atoi(p) : 1;
}
if (BSP_Configuration.User_multiprocessing_table->maximum_nodes == -1) {
home = getenv("HOME");
sprintf(buf, "%s/%s", home, "rtems_max_node");
if ((stat(buf, &stat_buf)) == 0) {
fd = open(buf, O_RDONLY);
read(fd, node, 5);
close(fd);
BSP_Multiprocessing.maximum_nodes = atoi(node);
}
/* If needed provide maximum_nodes also */
if (BSP_Multiprocessing.maximum_nodes == -1)
{
p = getenv("RTEMS_MAXIMUM_NODES");
BSP_Multiprocessing.maximum_nodes = p ? atoi(p) : 1;
}
}
}
/*
@@ -239,10 +234,23 @@ bsp_start(void)
else
cpu_number = 0;
BSP_Configuration.work_space_start = (void *)MY_WORK_SPACE;
if (BSP_Configuration.work_space_size)
BSP_Configuration.work_space_size = WORKSPACE_SIZE;
if (getenv("RTEMS_WORKSPACE_SIZE"))
BSP_Configuration.work_space_size =
strtol(getenv("RTEMS_WORKSPACE_SIZE"), 0, 0);
else
BSP_Configuration.work_space_size = DEFAULT_WORKSPACE_SIZE;
/*
* Allocate workspace memory, ensuring it is properly aligned
*/
workspace_ptr =
(unsigned32) sbrk(BSP_Configuration.work_space_size + CPU_ALIGNMENT);
workspace_ptr += CPU_ALIGNMENT - 1;
workspace_ptr &= ~(CPU_ALIGNMENT - 1);
BSP_Configuration.work_space_start = (void *) workspace_ptr;
/*
* Set up our hooks
* Make sure libc_init is done before drivers init'd so that