/*
* Random Delay
*
* Delays for a random amount of time within the range given
* by the file scope variables delayMin and delayMax. The
* selected amount of delay can come from any part of the
* range, with a bias towards values closer to delayMin.
* The amount of bias is determined by the setting of DELAY_EXP.
* The setting of DELAY_EXP should always be > 1.0, with higher
* values causing a more significant bias toward the value
* of delayMin.
*/
void randDelay(void)
{
const unsigned long nanosecspersec = 1000000000;
float fract, biasedFract, amt;
struct timeval startTime, endTime;
// Obtain start time
gettimeofday(&startTime, NULL);
// Determine random amount to sleep.
// Values closer to delayMin are prefered by an amount
// determined by the value of DELAY_EXP.
fract = testRandFract();
biasedFract = pow(DELAY_EXP, fract) / pow(DELAY_EXP, 1.0);
amt = delayMin + ((delayMax - delayMin) * biasedFract);
// Delay
testDelay(amt);
// Obtain end time and display delta
gettimeofday(&endTime, NULL);
testPrintI("delay: %.2f",
(float) (tv2double(&endTime) - tv2double(&startTime)));
}
static int
parseargs(int argc, char *argv[])
{
int c;
int sts;
char *endnum;
char *msg;
struct timeval interval;
while ((c = pmgetopt_r(argc, argv, &opts)) != EOF) {
switch (c) {
case 'A': /* output time alignment */
Aarg = opts.optarg;
break;
case 'D': /* debug flag */
sts = __pmParseDebug(opts.optarg);
if (sts < 0) {
pmprintf("%s: unrecognized debug flag specification (%s)\n",
pmProgname, opts.optarg);
opts.errors++;
}
else
pmDebug |= sts;
break;
case 's': /* number of samples to write out */
sarg = (int)strtol(opts.optarg, &endnum, 10);
if (*endnum != '\0' || sarg < 0) {
pmprintf("%s: -s requires numeric argument\n",
pmProgname);
opts.errors++;
}
break;
case 'S': /* start time for reduction */
Sarg = opts.optarg;
break;
case 'T': /* end time for reduction */
Targ = opts.optarg;
break;
case 't': /* output sample interval */
if (pmParseInterval(opts.optarg, &interval, &msg) < 0) {
pmprintf("%s", msg);
free(msg);
opts.errors++;
}
else
targ = tv2double(&interval);
break;
case 'v': /* number of samples per volume */
varg = (int)strtol(opts.optarg, &endnum, 10);
if (*endnum != '\0' || varg < 0) {
pmprintf("%s: -v requires numeric argument\n",
pmProgname);
opts.errors++;
}
break;
case 'Z': /* use timezone from command line */
if (zarg) {
pmprintf("%s: at most one of -Z and/or -z allowed\n",
pmProgname);
opts.errors++;
}
tz = opts.optarg;
break;
case 'z': /* use timezone from archive */
if (tz != NULL) {
pmprintf("%s: at most one of -Z and/or -z allowed\n",
pmProgname);
opts.errors++;
}
zarg++;
break;
case '?':
default:
opts.errors++;
break;
}
}
if (opts.errors == 0 && opts.optind > argc-2) {
pmprintf("%s: Error: insufficient arguments\n", pmProgname);
opts.errors++;
}
return -opts.errors;
}
/*
* Main
*
* Performs the following high-level sequence of operations:
*
* 1. Command-line parsing
*
* 2. Initialization
*
* 3. Execute passes that repeatedly perform the WiFi load, scan,
* associate, unload sequence.
*
* 4. Restore state of WiFi driver to state it was at the
* start of the test.
*
* 5. Restart framework
*/
int
main(int argc, char *argv[])
{
FILE *fp;
int rv, opt;
int cpu;
char *chptr;
unsigned int pass;
char cmd[MAXCMD];
float duration = DEFAULT_DURATION;
unsigned int startPass = DEFAULT_START_PASS, endPass = DEFAULT_END_PASS;
struct timeval startTime, currentTime, delta;
testSetLogCatTag(LOG_TAG);
// Parse command line arguments
while ((opt = getopt(argc, argv, "d:D:s:e:p:t:?")) != -1) {
switch (opt) {
case 'd': // Minimum Delay
delayMin = strtod(optarg, &chptr);
if ((*chptr != '\0') || (delayMin < 0.0)) {
testPrintE("Invalid command-line specified minimum delay "
"of: %s", optarg);
exit(1);
}
break;
case 'D': // Maximum Delay
delayMax = strtod(optarg, &chptr);
if ((*chptr != '\0') || (delayMax < 0.0)) {
testPrintE("Invalid command-line specified maximum delay "
"of: %s", optarg);
exit(2);
}
break;
case 't': // Duration
duration = strtod(optarg, &chptr);
if ((*chptr != '\0') || (duration < 0.0)) {
testPrintE("Invalid command-line specified duration of: %s",
optarg);
exit(3);
}
break;
case 's': // Starting Pass
if (sFlag || pFlag) {
testPrintE("Invalid combination of command-line options,");
if (sFlag) {
testPrintE(" -s flag specified multiple times.");
} else {
testPrintE(" -s and -p flags are mutually exclusive.");
}
exit(10);
}
sFlag = true;
startPass = strtoul(optarg, &chptr, 10);
if (*chptr != '\0') {
testPrintE("Invalid command-line specified starting pass "
"of: %s", optarg);
exit(4);
}
break;
case 'e': // Ending Pass
if (eFlag || pFlag) {
testPrintE("Invalid combination of command-line options,");
if (sFlag) {
testPrintE(" -e flag specified multiple times.");
} else {
testPrintE(" -e and -p flags are mutually exclusive.");
}
exit(11);
}
eFlag = true;
endPass = strtoul(optarg, &chptr, 10);
if (*chptr != '\0') {
testPrintE("Invalid command-line specified ending pass "
"of: %s", optarg);
exit(5);
}
break;
case 'p': // Single Specific Pass
if (pFlag || sFlag || eFlag) {
testPrintE("Invalid combination of command-line options,");
if (pFlag) {
testPrintE(" -p flag specified multiple times.");
} else {
testPrintE(" -p and -%c flags are mutually exclusive.",
(sFlag) ? 's' : 'e');
}
exit(12);
}
pFlag = true;
endPass = startPass = strtoul(optarg, &chptr, 10);
if (*chptr != '\0') {
testPrintE("Invalid command-line specified pass "
"of: %s", optarg);
exit(13);
}
break;
case '?':
default:
testPrintE(" %s [options]", basename(argv[0]));
testPrintE(" options:");
testPrintE(" -s Starting pass");
testPrintE(" -e Ending pass");
testPrintE(" -p Specific single pass");
testPrintE(" -t Duration");
testPrintE(" -d Delay min");
testPrintE(" -D Delay max");
exit(((optopt == 0) || (optopt == '?')) ? 0 : 6);
}
}
if (delayMax < delayMin) {
testPrintE("Unexpected maximum delay less than minimum delay");
testPrintE(" delayMin: %f delayMax: %f", delayMin, delayMax);
exit(7);
}
if (endPass < startPass) {
testPrintE("Unexpected ending pass before starting pass");
testPrintE(" startPass: %u endPass: %u", startPass, endPass);
exit(8);
}
if (argc != optind) {
testPrintE("Unexpected command-line postional argument");
testPrintE(" %s [-s start_pass] [-e end_pass] [-d duration]",
basename(argv[0]));
exit(9);
}
testPrintI("duration: %g", duration);
testPrintI("startPass: %u", startPass);
testPrintI("endPass: %u", endPass);
testPrintI("delayMin: %f", delayMin);
testPrintI("delayMax: %f", delayMax);
init();
// For each pass
gettimeofday(&startTime, NULL);
for (pass = startPass; pass <= endPass; pass++) {
// Stop if duration of work has already been performed
gettimeofday(¤tTime, NULL);
delta = tvDelta(&startTime, ¤tTime);
if (tv2double(&delta) > duration) { break; }
testPrintI("==== Starting pass: %u", pass);
// Use a pass dependent sequence of random numbers
srand48(pass);
// Load WiFi Driver
randBind(&availCPU, &cpu);
if ((rv = wifi_load_driver()) != 0) {
testPrintE("CPU: %i wifi_load_driver() failed, rv: %i\n",
cpu, rv);
exit(20);
}
testPrintI("CPU: %i wifi_load_driver succeeded", cpu);
// Start Supplicant
randBind(&availCPU, &cpu);
if ((rv = wifi_start_supplicant(false)) != 0) {
testPrintE("CPU: %i wifi_start_supplicant() failed, rv: %i\n",
cpu, rv);
exit(21);
}
testPrintI("CPU: %i wifi_start_supplicant succeeded", cpu);
// Sleep a random amount of time
randDelay();
/*
* Obtain WiFi Status
* Half the time skip this step, which helps increase the
* level of randomization.
*/
if (testRandBool()) {
rv = snprintf(cmd, sizeof(cmd), "%s", CMD_STATUS);
if (rv >= (signed) sizeof(cmd) - 1) {
testPrintE("Command too long for: %s\n", CMD_STATUS);
exit(22);
}
testExecCmd(cmd);
}
// Stop Supplicant
randBind(&availCPU, &cpu);
if ((rv = wifi_stop_supplicant(false)) != 0) {
testPrintE("CPU: %i wifi_stop_supplicant() failed, rv: %i\n",
cpu, rv);
exit(23);
}
testPrintI("CPU: %i wifi_stop_supplicant succeeded", cpu);
// Unload WiFi Module
randBind(&availCPU, &cpu);
if ((rv = wifi_unload_driver()) != 0) {
testPrintE("CPU: %i wifi_unload_driver() failed, rv: %i\n",
cpu, rv);
exit(24);
}
testPrintI("CPU: %i wifi_unload_driver succeeded", cpu);
testPrintI("==== Completed pass: %u", pass);
}
// If needed restore WiFi driver to state it was in at the
// start of the test. It is assumed that it the driver
// was loaded, then the wpa_supplicant was also running.
if (driverLoadedAtStart) {
// Load driver
if ((rv = wifi_load_driver()) != 0) {
testPrintE("main load driver failed, rv: %i", rv);
exit(25);
}
// Start supplicant
if ((rv = wifi_start_supplicant(false)) != 0) {
testPrintE("main start supplicant failed, rv: %i", rv);
exit(26);
}
// Obtain WiFi Status
rv = snprintf(cmd, sizeof(cmd), "%s", CMD_STATUS);
if (rv >= (signed) sizeof(cmd) - 1) {
testPrintE("Command too long for: %s\n", CMD_STATUS);
exit(22);
}
testExecCmd(cmd);
}
// Start framework
rv = snprintf(cmd, sizeof(cmd), "%s", CMD_START_FRAMEWORK);
if (rv >= (signed) sizeof(cmd) - 1) {
testPrintE("Command too long for: %s\n", CMD_START_FRAMEWORK);
exit(27);
}
testExecCmd(cmd);
testPrintI("Successfully completed %u passes", pass - startPass);
return 0;
}