problem with accept() on Fedora 8 Post: 302158472

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Top Forums Programming problem with accept() on Fedora 8 Post 302158472 by Akimaki on Tuesday 15th of January 2008 12:06:08 PM

01-15-2008

Registered User

well the code is quite robust so i skip pasting here even pieces of it but i put together a little test where i just spawned a thread which created a socket and called accept. then in the main i waited a few sec and closed the socket and joined the thread. i debugged it and of course it stucked on accept().

Code:

uname({sys="Linux", node="hal9000", ...}) = 0
futex(0x3012adc, FUTEX_WAKE_PRIVATE, 2147483647) = 0
brk(0)                                  = 0x9065000
brk(0x9086000)                          = 0x9086000
clock_gettime(CLOCK_REALTIME, {1200419840, 211248690}) = 0
clock_gettime(CLOCK_REALTIME, {1200419840, 211319847}) = 0
open("/dev/urandom", O_RDONLY)          = 3
fstat64(3, {st_mode=S_IFCHR|0666, st_rdev=makedev(1, 9), ...}) = 0
ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbffe8bbc) = -1 EINVAL (Invalid argument)
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f3a000
read(3, "\310\foW^R\270\212\315\227\323\250\215\275\235z\267\336\263}\261\0\227\261\275\344\302\201\351\226,H"..., 4096) = 4096
close(3)                                = 0
munmap(0xb7f3a000, 4096)                = 0
fstat64(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f3a000
clock_gettime(CLOCK_REALTIME, {1200419840, 213952202}) = 0
clock_gettime(CLOCK_REALTIME, {1200419840, 214048675}) = 0
clock_gettime(CLOCK_REALTIME, {1200419840, 214158273}) = 0
clock_gettime(CLOCK_REALTIME, {1200419840, 214242900}) = 0
socket(PF_INET, SOCK_STREAM, IPPROTO_TCP) = 3
bind(3, {sa_family=AF_INET, sin_port=htons(6111), sin_addr=inet_addr("0.0.0.0")}, 16) = 0
setsockopt(3, SOL_SOCKET, SO_LINGER, {onoff=1, linger=0}, 8) = 0
ioctl(3, FIONBIO, [0])                  = 0
mmap2(NULL, 10489856, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7524000
mprotect(0xb7524000, 4096, PROT_NONE)   = 0
clone(child_stack=0xb7f244a4, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0xb7f24bd8, {entry_number:6, base_addr:0xb7f24b90, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}, child_tidptr=0xb7f24bd8) = 19928
clock_gettime(CLOCK_REALTIME, {1200419840, 215085087}) = 0
write(1, "starting..(0 s) [test] started o"..., 44) = 44
nanosleep({3, 0}, {0, 1132736})         = 0
close(3)                                = 0
futex(0xb7f24bd8, FUTEX_WAIT, 19928, NULL) = ? ERESTARTSYS (To be restarted)

i'am pretty sure it's something with fedora cause this software have successfully ran on a whole bunch of various platforms.

Akimaki

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LEARN ABOUT OPENDARWIN

fixadd

fixadd(3alleg4) 						  Allegro manual						   fixadd(3alleg4)

NAME

       fixadd - Safe function to add fixed point numbers clamping overflow. Allegro game programming library.

SYNOPSIS

       #include <allegro.h>

       fixed fixadd(fixed x, fixed y);

DESCRIPTION

       Although  fixed	point  numbers can be added with the normal '+' integer operator, that doesn't provide any protection against overflow. If
       overflow is a problem, you should use this function instead. It is slower than using integer operators, but if an overflow occurs  it  will
       set `errno' and clamp the result, rather than just letting it wrap. Example:

	  fixed result;
	  /* This will put 5035 into `result'. */
	  result = fixadd(itofix(5000), itofix(35));
	  /* Sets `errno' and puts -32768 into `result'. */
	  result = fixadd(itofix(-31000), itofix(-3000));
	  ASSERT(!errno); /* This will fail. */

RETURN VALUE

       Returns the clamped result of adding `x' to `y', setting `errno' to ERANGE if there was an overflow.

SEE ALSO

       fixsub(3alleg4), fixmul(3alleg4), fixdiv(3alleg4)

Allegro 							   version 4.4.2						   fixadd(3alleg4)

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