/*
* Creates a new semaphore with initial value
*/
void createSem(semaphore * s, int value) {
s->value = value;
s->mutex = 1;
s->cvar = st_cond_new();
if(s->cvar == NULL) {
perror("Error creating semaphore: ");
exit(1);
}
}
hoxResult
hoxDbClient::initialize( const char* szHost,
int nPort )
{
const char* FNAME = "hoxDbClient::initialize";
hoxResult result = hoxRC_UNKNOWN;
hoxLog(LOG_INFO, "%s: ENTER. [%s:%d]", FNAME, szHost, nPort);
if ( s_bInitialized )
{
hoxLog(LOG_DEBUG, "%s: The module has already initialized.", FNAME);
return hoxRC_OK;
}
s_mutex = st_mutex_new(); // ... to provide exclusive assess
/* Open a "shared" client socket. */
s_nfd = _open_client_socket( szHost, nPort );
if ( s_nfd == NULL )
{
hoxLog(LOG_ERROR, "%s: Failed to open a client socket.", FNAME);
return hoxRC_OK;
}
s_bInitialized = true;
/* Send an "HELLO" request to make sure that the DB Agent is OK. */
result = send_HELLO();
if ( result != hoxRC_OK )
{
hoxLog(LOG_ERROR, "%s: Failed to send HELLO request.", FNAME);
return hoxRC_ERR;
}
/* Start a "write" thread to help avoiding blocking
* handlers of client requests.
*/
s_writeCond = st_cond_new();
s_writeThread = st_thread_create( _handle_db_write,
( void * ) NULL,
1 /* joinable */,
0 /* stack-size */ );
if ( s_writeThread == NULL )
{
hoxLog(LOG_ERROR, "%s: Failed to create write DB thread.", FNAME);
return hoxRC_ERR;
}
hoxLog(LOG_DEBUG, "%s: END. (OK)", FNAME);
return hoxRC_OK;
}
/*
* Asynchronous DNS host name resolution. This program creates one
* ST thread for each host name (specified as command line arguments).
* All threads do host name resolution concurrently.
*/
int main(int argc, char *argv[])
{
if (st_init() < 0) {
perror("st_init");
exit(1);
}
condition = st_cond_new();
mutex = st_mutex_new();
int maxQueueP = 15;
int maxQueueC = 10;
st_thread_t p[6],c[6];
int i = 0;
for (; i < maxQueueP; ++i)
{
if ( (p[i] = st_thread_create(producer,i,1,0) ) == NULL) {
perror("st_thread_create producer failed");
exit(1);
}
}
i = 0;
for (; i < maxQueueC; ++i)
{
if ( (c[i] = st_thread_create(consumer,i,1,0) ) == NULL) {
perror("st_thread_create consumer failed");
exit(1);
}
}
i = 0;
for (; i < maxQueueP; ++i)
{
st_thread_join(p[i],0);
}
i = 0;
for (; i < maxQueueC; ++i)
{
st_thread_join(c[i],0);
}
/* NOTREACHED */
return 1;
}
_st_thread_t *st_thread_create(void *(*start)(void *arg), void *arg,
int joinable, int stk_size)
{
_st_thread_t *thread;
_st_stack_t *stack;
void **ptds;
char *sp;
#ifdef __ia64__
char *bsp;
#endif
/* Adjust stack size */
if (stk_size == 0)
stk_size = ST_DEFAULT_STACK_SIZE;
stk_size = ((stk_size + _ST_PAGE_SIZE - 1) / _ST_PAGE_SIZE) * _ST_PAGE_SIZE;
stack = _st_stack_new(stk_size);
if (!stack)
return NULL;
/* Allocate thread object and per-thread data off the stack */
#if defined (MD_STACK_GROWS_DOWN)
sp = stack->stk_top;
#ifdef __ia64__
/*
* The stack segment is split in the middle. The upper half is used
* as backing store for the register stack which grows upward.
* The lower half is used for the traditional memory stack which
* grows downward. Both stacks start in the middle and grow outward
* from each other.
*/
sp -= (stk_size >> 1);
bsp = sp;
/* Make register stack 64-byte aligned */
if ((unsigned long)bsp & 0x3f)
bsp = bsp + (0x40 - ((unsigned long)bsp & 0x3f));
stack->bsp = bsp + _ST_STACK_PAD_SIZE;
#endif
sp = sp - (ST_KEYS_MAX * sizeof(void *));
ptds = (void **) sp;
sp = sp - sizeof(_st_thread_t);
thread = (_st_thread_t *) sp;
/* Make stack 64-byte aligned */
if ((unsigned long)sp & 0x3f)
sp = sp - ((unsigned long)sp & 0x3f);
stack->sp = sp - _ST_STACK_PAD_SIZE;
#elif defined (MD_STACK_GROWS_UP)
sp = stack->stk_bottom;
thread = (_st_thread_t *) sp;
sp = sp + sizeof(_st_thread_t);
ptds = (void **) sp;
sp = sp + (ST_KEYS_MAX * sizeof(void *));
/* Make stack 64-byte aligned */
if ((unsigned long)sp & 0x3f)
sp = sp + (0x40 - ((unsigned long)sp & 0x3f));
stack->sp = sp + _ST_STACK_PAD_SIZE;
#else
#error Unknown OS
#endif
memset(thread, 0, sizeof(_st_thread_t));
memset(ptds, 0, ST_KEYS_MAX * sizeof(void *));
/* Initialize thread */
thread->private_data = ptds;
thread->stack = stack;
thread->start = start;
thread->arg = arg;
#ifndef __ia64__
_ST_INIT_CONTEXT(thread, stack->sp, _st_thread_main);
#else
_ST_INIT_CONTEXT(thread, stack->sp, stack->bsp, _st_thread_main);
#endif
/* If thread is joinable, allocate a termination condition variable */
if (joinable) {
thread->term = st_cond_new();
if (thread->term == NULL) {
_st_stack_free(thread->stack);
return NULL;
}
}
/* Make thread runnable */
thread->state = _ST_ST_RUNNABLE;
_st_active_count++;
_ST_ADD_RUNQ(thread);
#ifdef DEBUG
_ST_ADD_THREADQ(thread);
#endif
return thread;
}
extern "C" st_thread_t *st_thread_create(void *(*start)(void *arg), void *arg,
int joinable, int stk_size)
{
st_thread_t *thread;
st_stack_t *stack;
void **ptds;
char *sp;
/* Adjust stack size */
if (stk_size == 0)
stk_size = ST_DEFAULT_STACK_SIZE;
stk_size = ((stk_size + _ST_PAGE_SIZE - 1) / _ST_PAGE_SIZE) * _ST_PAGE_SIZE;
stack = _st_stack_new(stk_size);
if (!stack)
return NULL;
/* Allocate thread object and per-thread data off the stack */
#if defined (MD_STACK_GROWS_DOWN)
sp = stack->stk_top;
sp = sp - (ST_KEYS_MAX * sizeof(void *));
ptds = (void **) sp;
sp = sp - sizeof(st_thread_t);
thread = (st_thread_t *) sp;
/* Make stack 64-byte aligned */
if ((unsigned long)sp & 0x3f)
sp = sp - ((unsigned long)sp & 0x3f);
stack->sp = sp - _ST_STACK_PAD_SIZE;
#elif defined (MD_STACK_GROWS_UP)
sp = stack->stk_bottom;
thread = (st_thread_t *)sp;
sp = sp + sizeof(st_thread_t);
ptds = (void **)sp;
sp = sp + (ST_KEYS_MAX * sizeof(void *));
/* Make stack 64-byte aligned */
if ((unsigned long)sp & 0x3f)
sp = sp + (0x40 - ((unsigned long)sp & 0x3f));
stack->sp = sp + _ST_STACK_PAD_SIZE;
#else
#error Unknown OS
#endif
memset(thread, 0, sizeof(st_thread_t));
memset(ptds, 0, ST_KEYS_MAX * sizeof(void *));
/* Initialize thread */
thread->private_data = ptds;
thread->stack = stack;
thread->start = start;
thread->arg = arg;
_ST_INIT_CONTEXT(thread, stack->sp, _st_thread_main);
/* If thread is joinable, allocate a termination condition variable */
if (joinable) {
thread->term = st_cond_new();
if (thread->term == NULL) {
_st_stack_free(thread->stack);
return NULL;
}
}
if (!thread->context_switch)
{
thread->context_switch = (st_context_switch_t*)calloc(1, sizeof(st_context_switch_t));
thread->context_switch->thread = thread;
}
/* Make thread runnable */
thread->state = _ST_ST_RUNNABLE;
_st_active_count++;
_ST_ADD_RUNQ(thread);
return thread;
}
server_base_t()
:_ref(1)
{
_notify_cond = st_cond_new();
}
#include <errno.h>
#include <sys/types.h>
#include <signal.h>
#include <stdlib.h>
#include <iostream>
#include <string.h>
#include <stdio.h>
#include <limits.h>
#include <sys/wait.h>
#include <fcntl.h>
#include "timer.h"
#include "test_cases.h"
long workingNum = 0;
st_cond_t cond = st_cond_new();
static void* doneTask(void* arg) {
int rc = 0;
--workingNum;
if ((rc = st_cond_signal(cond)) != 0) {
std::cout << "st_cond_signal " << rc << " " << strerror(rc) << std::endl;
return NULL;
}
return NULL;
}
// context switching
void task2(void* arg) {
for (long i = 0; i < 1000000; ++i) {
//st_sleep(0);
