thodg/cgminer

diff --git a/NEWS b/NEWS
index c9a9d3a..4edc096 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,84 @@
+Version 2.4.4 - July 1, 2012
+
+- Fix builds on non gnu platforms.
+- api.c ensure old mode is always available when not using --api-groups + quit()
+on param errors
+- Implement rudimentary X-Mining-Hashrate support.
+- Detect large swings in temperature when below the target temperature range and
+change fan by amounts dependant on the value of tdiff.
+- Adjust the fanspeed by the magnitude of the temperature difference when in the
+optimal range.
+- Revert "Restarting cgminer from within after ADL has been corrupted only leads
+to a crash. Display a warning only and disable fanspeed monitoring."
+- api.c fix json already closed
+- implement and document API option --api-groups
+- Put upper bounds to under 2 hours that work can be rolled into the future for
+bitcoind will deem it invalid beyond that.
+- define API option --api-groups
+- api.c allow unwell devices to be enabled so they can be cured
+- miner.php - fix/enable autorefresh for custom pages
+- miner.php allow custom summary pages - new 'Mobile' summary
+- Work around pools that advertise very low expire= time inappropriately as this
+leads to many false positives for stale shares detected.
+- Only show ztex board count if any exist.
+- There is no need for work to be a union in struct workio_cmd
+- fpgautils.c include a debug message for all unknown open errors
+- Don't keep rolling work right up to the expire= cut off. Use 2/3 of the time
+between the scantime and the expiry as cutoff for reusing work.
+- Log a specific error when serial opens fail due to lack of user permissions
+- Increase GPU timing resolution to microsecond and add sanity check to ensure
+times are positive.
+- Opencl code may start executing before the clfinish order is given to it so
+get the start timing used for dynamic intensity from before the kernel is
+queued.
+- fpgautils.c - set BAUD rate according to termio spec
+- fpgautils.c - linux ordering back to the correct way
+- miner.php remove unneeded '.'s
+- miner.php add auto refresh options
+- miner.php add 'restart' next to 'quit'
+- miner.php make fontname/size configurable with myminer.php
+- Make the pools array a dynamically allocated array to allow unlimited pools to
+be added.
+- Make the devices array a dynamically allocated array of pointers to allow
+unlimited devices.
+- Dynamic intensity for GPUs should be calculated on a per device basis. Clean
+up the code to only calculate it if required as well.
+- Use a queueing bool set under control_lock to prevent multiple calls to
+queue_request racing.
+- Use the work clone flag to determine if we should subtract it from the total
+queued variable and provide a subtract queued function to prevent looping over
+locked code.
+- Don't decrement staged extras count from longpoll work.
+- Count longpoll's contribution to the queue.
+- Increase queued count before pushing message.
+- Test we have enough work queued for pools with and without rolltime
+capability.
+- As work is sorted by age, we can discard the oldest work at regular intervals
+to keep only 1 of the newest work items per mining thread.
+- Roll work again after duplicating it to prevent duplicates on return to the
+clone function.
+- Abstract out work cloning and clone $mining_threads copies whenever a rollable
+work item is found and return a clone instead.
+- api.c display Pool Av in json
+- Take into account average getwork delay as a marker of pool communications
+when considering work stale.
+- Work out a rolling average getwork delay stored in pool_stats.
+- Getwork delay in stats should include retries for each getwork call.
+- Walk through the thread list instead of searching for them when disabling
+threads for dynamic mode.
+- Extend nrolltime to support the expiry= parameter. Do this by turning the
+rolltime bool into an integer set to the expiry time. If the pool supports
+rolltime but not expiry= then set the expiry time to the standard scantime.
+- When disabling fanspeed monitoring on adl failure, remove any twin GPU
+association. This could have been leading to hangs on machines with dual GPU
+cards when ADL failed.
+- modminer: Don't delay 2nd+ FPGAs during work restart
+- Disable OpenCL code when not available.
+- Fix openwrt crashing on regeneratehash() by making check_solve a noop.
+- FPGA - allow device detect override without an open failure
+- Fix sign warning.
+
+
 Version 2.4.3 - June 14, 2012
 
 - can_roll and should_roll should have no bearing on the cycle period within the
diff --git a/cgminer.c b/cgminer.c
index 861332a..0654a1d 100644
--- a/cgminer.c
+++ b/cgminer.c
@@ -445,6 +445,7 @@ struct pool *current_pool(void)
 char *set_int_range(const char *arg, int *i, int min, int max)
 {
 	char *err = opt_set_intval(arg, i);
+
 	if (err)
 		return err;
 
@@ -594,7 +595,7 @@ static char *set_userpass(const char *arg)
 static char *enable_debug(bool *flag)
 {
 	*flag = true;
-	/* Turn out verbose output, too. */
+	/* Turn on verbose output, too. */
 	opt_log_output = true;
 	return NULL;
 }
@@ -609,8 +610,8 @@ static char *set_schedtime(const char *arg, struct schedtime *st)
 	return NULL;
 }
 
-static char*
-set_sharelog(char *arg) {
+static char* set_sharelog(char *arg)
+{
 	char *r = "";
 	long int i = strtol(arg, &r, 10);
 
@@ -662,11 +663,11 @@ static void load_temp_cutoffs()
 
 			devices[device]->cutofftemp = val;
 		}
-	}
-	else {
-		for (i = device; i < total_devices; ++i)
+	} else {
+		for (i = device; i < total_devices; ++i) {
 			if (!devices[i]->cutofftemp)
 				devices[i]->cutofftemp = opt_cutofftemp;
+		}
 		return;
 	}
 	if (device <= 1) {
@@ -1025,6 +1026,7 @@ static char *parse_config(json_t *config, bool fileconf)
 		name = strdup(opt->names);
 		for (p = strtok(name, "|"); p; p = strtok(NULL, "|")) {
 			char *err = NULL;
+
 			/* Ignore short options. */
 			if (p[1] != '-')
 				continue;
@@ -1117,8 +1119,7 @@ static void load_default_config(void)
 	if (getenv("HOME") && *getenv("HOME")) {
 	        strcpy(cnfbuf, getenv("HOME"));
 		strcat(cnfbuf, "/");
-	}
-	else
+	} else
 		strcpy(cnfbuf, "");
 	strcat(cnfbuf, ".cgminer/");
 #else
@@ -3364,8 +3365,9 @@ static void hashmeter(int thr_id, struct timeval *diff,
 		if (want_per_device_stats) {
 			struct timeval now;
 			struct timeval elapsed;
+
 			gettimeofday(&now, NULL);
-			timeval_subtract(&elapsed, &now, &thr->cgpu->last_message_tv);
+			timersub(&now, &thr->cgpu->last_message_tv, &elapsed);
 			if (opt_log_interval <= elapsed.tv_sec) {
 				struct cgpu_info *cgpu = thr->cgpu;
 				char logline[255];
@@ -3385,7 +3387,7 @@ static void hashmeter(int thr_id, struct timeval *diff,
 	/* Totals are updated by all threads so can race without locking */
 	mutex_lock(&hash_lock);
 	gettimeofday(&temp_tv_end, NULL);
-	timeval_subtract(&total_diff, &temp_tv_end, &total_tv_end);
+	timersub(&temp_tv_end, &total_tv_end, &total_diff);
 
 	total_mhashes_done += local_mhashes;
 	local_mhashes_done += local_mhashes;
@@ -3399,7 +3401,7 @@ static void hashmeter(int thr_id, struct timeval *diff,
 	decay_time(&rolling, local_mhashes_done / local_secs);
 	global_hashrate = roundl(rolling) * 1000000;
 
-	timeval_subtract(&total_diff, &total_tv_end, &total_tv_start);
+	timersub(&total_tv_end, &total_tv_start, &total_diff);
 	total_secs = (double)total_diff.tv_sec +
 		((double)total_diff.tv_usec / 1000000.0);
 
@@ -3953,7 +3955,7 @@ void *miner_thread(void *userdata)
 	/* Try to cycle approximately 5 times before each log update */
 	const long cycle = opt_log_interval / 5 ? : 1;
 	struct timeval tv_start, tv_end, tv_workstart, tv_lastupdate;
-	struct timeval diff, sdiff, wdiff;
+	struct timeval diff, sdiff, wdiff = {0, 0};
 	uint32_t max_nonce = api->can_limit_work ? api->can_limit_work(mythr) : 0xffffffff;
 	unsigned long long hashes_done = 0;
 	unsigned long long hashes;
@@ -4070,7 +4072,7 @@ void *miner_thread(void *userdata)
 				cgpu->max_hashes = hashes;
 
 			gettimeofday(&tv_end, NULL);
-			timeval_subtract(&diff, &tv_end, &tv_start);
+			timersub(&tv_end, &tv_start, &diff);
 			sdiff.tv_sec += diff.tv_sec;
 			sdiff.tv_usec += diff.tv_usec;
 			if (sdiff.tv_usec > 1000000) {
@@ -4078,7 +4080,7 @@ void *miner_thread(void *userdata)
 				sdiff.tv_usec -= 1000000;
 			}
 
-			timeval_subtract(&wdiff, &tv_end, &tv_workstart);
+			timersub(&tv_end, &tv_workstart, &wdiff);
 			if (!requested) {
 				if (wdiff.tv_sec > request_interval || work->blk.nonce > request_nonce) {
 					thread_reportout(mythr);
@@ -4114,7 +4116,7 @@ void *miner_thread(void *userdata)
 				max_nonce = max_nonce * 0x400 / (((cycle * 1000000) + sdiff.tv_usec) / (cycle * 1000000 / 0x400));
 			}
 
-			timeval_subtract(&diff, &tv_end, &tv_lastupdate);
+			timersub(&tv_end, &tv_lastupdate, &diff);
 			if (diff.tv_sec >= opt_log_interval) {
 				hashmeter(thr_id, &diff, hashes_done);
 				hashes_done = 0;
@@ -4601,7 +4603,7 @@ static void print_summary(void)
 	int hours, mins, secs, i;
 	double utility, efficiency = 0.0;
 
-	timeval_subtract(&diff, &total_tv_end, &total_tv_start);
+	timersub(&total_tv_end, &total_tv_start, &diff);
 	hours = diff.tv_sec / 3600;
 	mins = (diff.tv_sec % 3600) / 60;
 	secs = diff.tv_sec % 60;
@@ -4812,71 +4814,72 @@ out:
 #endif
 
 #if defined(unix)
-	static void fork_monitor()
-	{
-		// Make a pipe: [readFD, writeFD]
-		int pfd[2];
-		int r = pipe(pfd);
-		if (r<0) {
-			perror("pipe - failed to create pipe for --monitor");
-			exit(1);
-		}
+static void fork_monitor()
+{
+	// Make a pipe: [readFD, writeFD]
+	int pfd[2];
+	int r = pipe(pfd);
 
-		// Make stderr write end of pipe
-		fflush(stderr);
-		r = dup2(pfd[1], 2);
-		if (r<0) {
-			perror("dup2 - failed to alias stderr to write end of pipe for --monitor");
-			exit(1);
-		}
-		r = close(pfd[1]);
-		if (r<0) {
-			perror("close - failed to close write end of pipe for --monitor");
-			exit(1);
-		}
+	if (r < 0) {
+		perror("pipe - failed to create pipe for --monitor");
+		exit(1);
+	}
 
-		// Don't allow a dying monitor to kill the main process
-		sighandler_t sr0 = signal(SIGPIPE, SIG_IGN);
-		sighandler_t sr1 = signal(SIGPIPE, SIG_IGN);
-		if (SIG_ERR==sr0 || SIG_ERR==sr1) {
-			perror("signal - failed to edit signal mask for --monitor");
+	// Make stderr write end of pipe
+	fflush(stderr);
+	r = dup2(pfd[1], 2);
+	if (r < 0) {
+		perror("dup2 - failed to alias stderr to write end of pipe for --monitor");
+		exit(1);
+	}
+	r = close(pfd[1]);
+	if (r < 0) {
+		perror("close - failed to close write end of pipe for --monitor");
+		exit(1);
+	}
+
+	// Don't allow a dying monitor to kill the main process
+	sighandler_t sr0 = signal(SIGPIPE, SIG_IGN);
+	sighandler_t sr1 = signal(SIGPIPE, SIG_IGN);
+	if (SIG_ERR == sr0 || SIG_ERR == sr1) {
+		perror("signal - failed to edit signal mask for --monitor");
+		exit(1);
+	}
+
+	// Fork a child process
+	forkpid = fork();
+	if (forkpid < 0) {
+		perror("fork - failed to fork child process for --monitor");
+		exit(1);
+	}
+
+	// Child: launch monitor command
+	if (0 == forkpid) {
+		// Make stdin read end of pipe
+		r = dup2(pfd[0], 0);
+		if (r < 0) {
+			perror("dup2 - in child, failed to alias read end of pipe to stdin for --monitor");
 			exit(1);
 		}
-
-		// Fork a child process
-		forkpid = fork();
-		if (forkpid<0) {
-			perror("fork - failed to fork child process for --monitor");
+		close(pfd[0]);
+		if (r < 0) {
+			perror("close - in child, failed to close read end of  pipe for --monitor");
 			exit(1);
 		}
 
-		// Child: launch monitor command
-		if (0==forkpid) {
-			// Make stdin read end of pipe
-			r = dup2(pfd[0], 0);
-			if (r<0) {
-				perror("dup2 - in child, failed to alias read end of pipe to stdin for --monitor");
-				exit(1);
-			}
-			close(pfd[0]);
-			if (r<0) {
-				perror("close - in child, failed to close read end of  pipe for --monitor");
-				exit(1);
-			}
-
-			// Launch user specified command
-			execl("/bin/bash", "/bin/bash", "-c", opt_stderr_cmd, (char*)NULL);
-			perror("execl - in child failed to exec user specified command for --monitor");
-			exit(1);
-		}
+		// Launch user specified command
+		execl("/bin/bash", "/bin/bash", "-c", opt_stderr_cmd, (char*)NULL);
+		perror("execl - in child failed to exec user specified command for --monitor");
+		exit(1);
+	}
 
-		// Parent: clean up unused fds and bail
-		r = close(pfd[0]);
-		if (r<0) {
-			perror("close - failed to close read end of pipe for --monitor");
-			exit(1);
-		}
+	// Parent: clean up unused fds and bail
+	r = close(pfd[0]);
+	if (r < 0) {
+		perror("close - failed to close read end of pipe for --monitor");
+		exit(1);
 	}
+}
 #endif // defined(unix)
 
 #ifdef HAVE_CURSES
@@ -4958,8 +4961,7 @@ bool add_cgpu(struct cgpu_info*cgpu)
 	HASH_FIND_STR(devids, cgpu->api->name, d);
 	if (d)
 		cgpu->device_id = ++d->lastid;
-	else
-	{
+	else {
 		d = malloc(sizeof(*d));
 		memcpy(d->name, cgpu->api->name, sizeof(d->name));
 		cgpu->device_id = d->lastid = 0;
@@ -5118,14 +5120,16 @@ int main(int argc, char *argv[])
 		opt_log_output = true;
 
 #ifdef WANT_CPUMINE
-	if (0<=opt_bench_algo) {
+	if (0 <= opt_bench_algo) {
 		double rate = bench_algo_stage3(opt_bench_algo);
-		if (!skip_to_bench) {
+
+		if (!skip_to_bench)
 			printf("%.5f (%s)\n", rate, algo_names[opt_bench_algo]);
-		} else {
+		else {
 			// Write result to shared memory for parent
-			#if defined(WIN32)
+#if defined(WIN32)
 				char unique_name[64];
+
 				if (GetEnvironmentVariable("CGMINER_SHARED_MEM", unique_name, 32)) {
 					HANDLE map_handle = CreateFileMapping(
 						INVALID_HANDLE_VALUE,   // use paging file
@@ -5135,7 +5139,7 @@ int main(int argc, char *argv[])
 						4096,			// size: low 32-bits
 						unique_name		// name of map object
 					);
-					if (NULL!=map_handle) {
+					if (NULL != map_handle) {
 						void *shared_mem = MapViewOfFile(
 							map_handle,	// object to map view of
 							FILE_MAP_WRITE, // read/write access
@@ -5143,13 +5147,13 @@ int main(int argc, char *argv[])
 							0,              // low offset:   beginning
 							0		// default: map entire file
 						);
-						if (NULL!=shared_mem)
+						if (NULL != shared_mem)
 							CopyMemory(shared_mem, &rate, sizeof(rate));
 						(void)UnmapViewOfFile(shared_mem);
 					}
 					(void)CloseHandle(map_handle);
 				}
-			#endif
+#endif
 		}
 		exit(0);
 	}
diff --git a/driver-modminer.c b/driver-modminer.c
index 2f8ee11..5b00aac 100644
--- a/driver-modminer.c
+++ b/driver-modminer.c
@@ -466,7 +466,7 @@ modminer_process_results(struct thr_info*thr)
 
 	struct timeval tv_workend, elapsed;
 	gettimeofday(&tv_workend, NULL);
-	timeval_subtract(&elapsed, &tv_workend, &state->tv_workstart);
+	timersub(&tv_workend, &state->tv_workstart, &elapsed);
 
 	uint64_t hashes = (uint64_t)state->clock * (((uint64_t)elapsed.tv_sec * 1000000) + elapsed.tv_usec);
 	if (hashes > 0xffffffff)
diff --git a/miner.h b/miner.h
index 57dd636..8d9ef2f 100644
--- a/miner.h
+++ b/miner.h
@@ -561,9 +561,6 @@ typedef bool (*sha256_func)(int thr_id, const unsigned char *pmidstate,
 	uint32_t *last_nonce,
 	uint32_t nonce);
 
-extern int
-timeval_subtract (struct timeval *result, struct timeval *x, struct timeval *y);
-
 extern bool fulltest(const unsigned char *hash, const unsigned char *target);
 
 extern int opt_scantime;
diff --git a/util.c b/util.c
index ffc6a70..b17ecea 100644
--- a/util.c
+++ b/util.c
@@ -147,9 +147,9 @@ static size_t resp_hdr_cb(void *ptr, size_t size, size_t nmemb, void *user_data)
 
 	memcpy(val, rem, remlen);	/* store value, trim trailing ws */
 	val[remlen] = 0;
-	while ((*val) && (isspace(val[strlen(val) - 1]))) {
+	while ((*val) && (isspace(val[strlen(val) - 1])))
 		val[strlen(val) - 1] = 0;
-	}
+
 	if (!*val)			/* skip blank value */
 		goto out;
 
@@ -157,9 +157,9 @@ static size_t resp_hdr_cb(void *ptr, size_t size, size_t nmemb, void *user_data)
 		applog(LOG_DEBUG, "HTTP hdr(%s): %s", key, val);
 
 	if (!strcasecmp("X-Roll-Ntime", key)) {
-		if (!strncasecmp("N", val, 1)) {
+		if (!strncasecmp("N", val, 1))
 			applog(LOG_DEBUG, "X-Roll-Ntime: N found");
-		} else {
+		else {
 			/* Check to see if expire= is supported and if not, set
 			 * the rolltime to the default scantime */
 			if (strlen(val) > 7 && !strncasecmp("expire=", val, 7))
@@ -256,10 +256,10 @@ json_t *json_rpc_call(CURL *curl, const char *url,
 		      bool probe, bool longpoll, int *rolltime,
 		      struct pool *pool, bool share)
 {
-	char len_hdr[64], user_agent_hdr[128], *ghashrate;
 	long timeout = longpoll ? (60 * 60) : 60;
 	struct data_buffer all_data = {NULL, 0};
 	struct header_info hi = {NULL, 0, NULL};
+	char len_hdr[64], user_agent_hdr[128];
 	char curl_err_str[CURL_ERROR_SIZE];
 	struct curl_slist *headers = NULL;
 	struct upload_buffer upload_data;
@@ -327,9 +327,10 @@ json_t *json_rpc_call(CURL *curl, const char *url,
 		"X-Mining-Extensions: longpoll midstate rollntime submitold");
 
 	if (likely(global_hashrate)) {
-		asprintf(&ghashrate, "X-Mining-Hashrate: %llu", global_hashrate);
+		char ghashrate[255];
+
+		sprintf(ghashrate, "X-Mining-Hashrate: %llu", global_hashrate);
 		headers = curl_slist_append(headers, ghashrate);
-		free(ghashrate);
 	}
 
 	headers = curl_slist_append(headers, len_hdr);
@@ -379,9 +380,8 @@ json_t *json_rpc_call(CURL *curl, const char *url,
 			if (pool->hdr_path != NULL)
 				free(pool->hdr_path);
 			pool->hdr_path = hi.lp_path;
-		} else {
+		} else
 			pool->hdr_path = NULL;
-		}
 	} else if (hi.lp_path) {
 		free(hi.lp_path);
 		hi.lp_path = NULL;
@@ -401,6 +401,7 @@ json_t *json_rpc_call(CURL *curl, const char *url,
 
 	if (opt_protocol) {
 		char *s = json_dumps(val, JSON_INDENT(3));
+
 		applog(LOG_DEBUG, "JSON protocol response:\n%s", s);
 		free(s);
 	}
@@ -450,8 +451,8 @@ err_out:
 
 char *bin2hex(const unsigned char *p, size_t len)
 {
-	unsigned int i;
 	char *s = malloc((len * 2) + 1);
+	unsigned int i;
 
 	if (!s)
 		return NULL;
@@ -492,43 +493,14 @@ bool hex2bin(unsigned char *p, const char *hexstr, size_t len)
 	return (len == 0 && *hexstr == 0) ? true : false;
 }
 
-/* Subtract the `struct timeval' values X and Y,
-   storing the result in RESULT.
-   Return 1 if the difference is negative, otherwise 0.  */
-
-int timeval_subtract(struct timeval *result, struct timeval *x, struct timeval *y)
-{
-	/* Perform the carry for the later subtraction by updating Y. */
-	if (x->tv_usec < y->tv_usec) {
-		int nsec = (y->tv_usec - x->tv_usec) / 1000000 + 1;
-
-		y->tv_usec -= 1000000 * nsec;
-		y->tv_sec += nsec;
-	}
-	if (x->tv_usec - y->tv_usec > 1000000) {
-		int nsec = (x->tv_usec - y->tv_usec) / 1000000;
-
-		y->tv_usec += 1000000 * nsec;
-		y->tv_sec -= nsec;
-	}
-
-	/* Compute the time remaining to wait.
-	 * `tv_usec' is certainly positive. */
-	result->tv_sec = x->tv_sec - y->tv_sec;
-	result->tv_usec = x->tv_usec - y->tv_usec;
-
-	/* Return 1 if result is negative. */
-	return x->tv_sec < y->tv_sec;
-}
-
 bool fulltest(const unsigned char *hash, const unsigned char *target)
 {
 	unsigned char hash_swap[32], target_swap[32];
 	uint32_t *hash32 = (uint32_t *) hash_swap;
 	uint32_t *target32 = (uint32_t *) target_swap;
-	int i;
-	bool rc = true;
 	char *hash_str, *target_str;
+	bool rc = true;
+	int i;
 
 	swap256(hash_swap, hash);
 	swap256(target_swap, target);
@@ -681,10 +653,7 @@ out:
 
 int thr_info_create(struct thr_info *thr, pthread_attr_t *attr, void *(*start) (void *), void *arg)
 {
-	int ret;
-
-	ret = pthread_create(&thr->pth, attr, start, arg);
-	return ret;
+	return pthread_create(&thr->pth, attr, start, arg);
 }
 
 void thr_info_freeze(struct thr_info *thr)