qnx.c File Reference

#include "uv.h"
#include "internal.h"
#include <string.h>
#include <sys/process.h>
#include <sys/neutrino.h>
#include <sys/memmsg.h>
#include <sys/syspage.h>
#include <sys/procfs.h>

Go to the source code of this file.

Functions
static void	get_mem_info (uint64_t *totalmem, uint64_t *freemem)
void	uv_loadavg (double avg[3])
int	uv_exepath (char *buffer, size_t *size)
uint64_t	uv_get_free_memory (void)
uint64_t	uv_get_total_memory (void)
uint64_t	uv_get_constrained_memory (void)
int	uv_resident_set_memory (size_t *rss)
int	uv_uptime (double *uptime)
int	uv_cpu_info (uv_cpu_info_t **cpu_infos, int *count)

Function Documentation

get_mem_info()

static void get_mem_info ( uint64_t *  totalmem, uint64_t *  freemem  )

static

Definition at line 33 of file qnx.c.

                                                    {
  mem_info_t msg;
 
  memset(&msg, 0, sizeof(msg));
  msg.i.type = _MEM_INFO;
  msg.i.fd = -1;
 
  if (MsgSend(MEMMGR_COID, &msg.i, sizeof(msg.i), &msg.o, sizeof(msg.o))
      != -1) {
    *totalmem = msg.o.info.__posix_tmi_total;
    *freemem = msg.o.info.posix_tmi_length;
  } else {
    *totalmem = 0;
    *freemem = 0;
  }
}

References memset(), and msg.

Referenced by uv_get_free_memory(), and uv_get_total_memory().

uv_cpu_info()

int uv_cpu_info	(	uv_cpu_info_t **	cpu_infos,
		int *	count
	)

Definition at line 117 of file qnx.c.

                                                       {
  struct cpuinfo_entry* cpuinfo =
    (struct cpuinfo_entry*)_SYSPAGE_ENTRY(_syspage_ptr, new_cpuinfo);
  size_t cpuinfo_size = _SYSPAGE_ELEMENT_SIZE(_syspage_ptr, cpuinfo);
  struct strings_entry* strings = _SYSPAGE_ENTRY(_syspage_ptr, strings);
  int num_cpus = _syspage_ptr->num_cpu;
  int i;
 
  *count = num_cpus;
  *cpu_infos = uv__malloc(num_cpus * sizeof(**cpu_infos));
  if (*cpu_infos == NULL)
    return UV_ENOMEM;
 
  for (i = 0; i < num_cpus; i++) {
    (*cpu_infos)[i].model = strdup(&strings->data[cpuinfo->name]);
    (*cpu_infos)[i].speed = cpuinfo->speed;
    SYSPAGE_ARRAY_ADJ_OFFSET(cpuinfo, cpuinfo, cpuinfo_size);
  }
 
  return 0;
}

References count, i, NULL, strdup(), strings(), and uv__malloc().

uv_exepath()

int uv_exepath	(	char *	buffer,
		size_t *	size
	)

Definition at line 58 of file qnx.c.

                                           {
  char path[PATH_MAX];
  if (buffer == NULL || size == NULL || *size == 0)
    return UV_EINVAL;
 
  realpath(_cmdname(NULL), path);
  strlcpy(buffer, path, *size);
  *size = strlen(buffer);
  return 0;
}

References NULL, and path.

uv_get_constrained_memory()

uint64_t uv_get_constrained_memory

(

void

)

Definition at line 86 of file qnx.c.

                                         {
  return 0;
}

uv_get_free_memory()

uint64_t uv_get_free_memory

(

void

)

Definition at line 70 of file qnx.c.

                                  {
  uint64_t totalmem;
  uint64_t freemem;
  get_mem_info(&totalmem, &freemem);
  return freemem;
}

References get_mem_info().

uv_get_total_memory()

uint64_t uv_get_total_memory

(

void

)

Definition at line 78 of file qnx.c.

                                   {
  uint64_t totalmem;
  uint64_t freemem;
  get_mem_info(&totalmem, &freemem);
  return totalmem;
}

References get_mem_info().

uv_loadavg()

void uv_loadavg

(

double

avg[3]

)

Definition at line 51 of file qnx.c.

                               {
  avg[0] = 0.0;
  avg[1] = 0.0;
  avg[2] = 0.0;
}

uv_resident_set_memory()

int uv_resident_set_memory

(

size_t *

rss

)

Definition at line 91 of file qnx.c.

                                        {
  int fd;
  procfs_asinfo asinfo;
 
  fd = uv__open_cloexec("/proc/self/ctl", O_RDONLY);
  if (fd == -1)
    return UV__ERR(errno);
 
  if (devctl(fd, DCMD_PROC_ASINFO, &asinfo, sizeof(asinfo), 0) == -1) {
    uv__close(fd);
    return UV__ERR(errno);
  }
 
  uv__close(fd);
  *rss = asinfo.rss;
  return 0;
}

References fd, O_RDONLY, uv__close(), UV__ERR, and uv__open_cloexec().

uv_uptime()

int uv_uptime

(

double *

uptime

)

Definition at line 110 of file qnx.c.

                              {
  struct qtime_entry* qtime = _SYSPAGE_ENTRY(_syspage_ptr, qtime);
  *uptime = (qtime->nsec / 1000000000.0);
  return 0;
}