J'ai une plarform intégrée qui a 2 couches graphiques (/ dev/fb0 et/dev/fb1).LinuxFB + DirectFB en même temps?
Je veux utiliser 2 processus distincts: On utilise directement/dev/fb0 (mode brut, pas de librairies vidéo). L'autre utilisant/dev/fb1 via directfb.
Je peux démarrer le premier et il fonctionne bien (j'utilise la fonction open linux pour ouvrir/dev/fb0 et écrire directement).
Lorsque j'essaie de démarrer le second, il se bloque dans l'initialisation directfb.
Je ne comprends pas pourquoi directFb se verrouille sur/dev/fb0 si j'essaie d'utiliser/dev/fb1.
Comme demandé par @shodanex, voici la sortie de strace pour le second processus:
[pid 1483] open("/etc/directfbrc", O_RDONLY) = 7
[pid 1483] fstat64(7, {st_mode=S_IFREG|0755, st_size=472, ...}) = 0
[pid 1483] old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2f375000
[pid 1483] read(7, "system=fbdev\n#no-vt\n#no-vt-switc"..., 4096) = 472
[pid 1483] write(2, "(!) DirectFB/Config \'depth\': OK!"..., 39(!) DirectFB/Config 'depth': OK!!!! 32
) = 39
[pid 1483] read(7, "", 4096) = 0
[pid 1483] close(7) = 0
[pid 1483] munmap(0x2f375000, 4096) = 0
[pid 1483] open("/root/.directfbrc", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 1483] write(2, "\n =======================| "..., 270
=======================| DirectFB 1.0.1 |=======================
(c) 2001-2007 The DirectFB Organization (directfb.org)
(c) 2000-2004 Convergence (integrated media) GmbH
------------------------------------------------------------
) = 270
[pid 1483] gettid() = 1483
[pid 1483] rt_sigaction(SIGHUP, {0x2a323fc0, [], SA_NOMASK|SA_SIGINFO}, {SIG_DFL}, 8) = 0
[pid 1483] rt_sigaction(SIGINT, {0x2a323fc0, [], SA_NOMASK|SA_SIGINFO}, {SIG_DFL}, 8) = 0
[pid 1483] rt_sigaction(SIGTERM, {0x2a323fc0, [], SA_NOMASK|SA_SIGINFO}, {SIG_DFL}, 8) = 0
[pid 1483] rt_sigaction(SIGABRT, {0x2a323fc0, [], SA_NOMASK|SA_SIGINFO}, {SIG_DFL}, 8) = 0
[pid 1483] rt_sigaction(SIGFPE, {0x2a323fc0, [], SA_NOMASK|SA_SIGINFO}, {0x29d6f860, [], 0}, 8) = 0
[pid 1483] rt_sigaction(SIGILL, {0x2a323fc0, [], SA_NOMASK|SA_SIGINFO}, {0x29d6f860, [], 0}, 8) = 0
[pid 1483] rt_sigaction(SIGQUIT, {0x2a323fc0, [], SA_NOMASK|SA_SIGINFO}, {SIG_DFL}, 8) = 0
[pid 1483] rt_sigaction(SIGSEGV, {0x2a323fc0, [], SA_SIGINFO}, {0x29d6f860, [], 0}, 8) = 0
[pid 1483] rt_sigaction(SIGTRAP, {0x2a323fc0, [], SA_NOMASK|SA_SIGINFO}, {SIG_DFL}, 8) = 0
[pid 1483] rt_sigaction(SIGBUS, {0x2a323fc0, [], SA_NOMASK|SA_SIGINFO}, {0x29d6f860, [], 0}, 8) = 0
[pid 1483] rt_sigaction(SIGXCPU, {0x2a323fc0, [], SA_NOMASK|SA_SIGINFO}, {SIG_DFL}, 8) = 0
[pid 1483] rt_sigaction(SIGXFSZ, {0x2a323fc0, [], SA_NOMASK|SA_SIGINFO}, {SIG_DFL}, 8) = 0
[pid 1483] write(2, "(*) DirectFB/Core: Single Applic"..., 64(*) DirectFB/Core: Single Application Core. (2010-03-25 20:40)
) = 64
[pid 1483] open("/usr/lib/libdirectfb-1.0.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 1483] open("/usr/lib/directfb-1.0-0/systems", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY) = 7
[pid 1483] fstat64(7, {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
[pid 1483] fcntl64(7, F_SETFD, FD_CLOEXEC) = 0
[pid 1483] getdents(7, /* 10 entries */, 4096) = 288
[pid 1483] open("/usr/lib/directfb-1.0-0/systems/libdirectfb_fbdev.so", O_RDONLY) = 8
[pid 1483] read(8, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0*\0\1\0\0\0\200&\0\0004\0\0\0"..., 512) = 512
[pid 1483] fstat64(8, {st_mode=S_IFREG|0755, st_size=59543, ...}) = 0
[pid 1483] old_mmap(NULL, 115640, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 8, 0) = 0x2f378000
[pid 1483] mprotect(0x2f384000, 65536, PROT_NONE) = 0
[pid 1483] old_mmap(0x2f394000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 8, 0xc000) = 0x2f394000
[pid 1483] close(8) = 0
[pid 1483] open("/usr/lib/directfb-1.0-0/systems/libdirectfb_x11.so", O_RDONLY) = 8
[pid 1483] read(8, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0*\0\1\0\0\0\200\35\0\0004\0\0\0"..., 512) = 512
[pid 1483] fstat64(8, {st_mode=S_IFREG|0755, st_size=25273, ...}) = 0
[pid 1483] old_mmap(NULL, 83288, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 8, 0) = 0x2f398000
[pid 1483] mprotect(0x2f39d000, 61440, PROT_NONE) = 0
[pid 1483] old_mmap(0x2f3ac000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 8, 0x4000) = 0x2f3ac000
[pid 1483] close(8) = 0
[pid 1483] open("/usr/local/lib/mylibs/libX11.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 1483] open("/usr/local/lib/libX11.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 1483] open("/usr/lib/libX11.so.6", O_RDONLY) = 8
[pid 1483] read(8, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0*\0\1\0\0\0\340\205\1\0004\0\0\0"..., 512) = 512
[pid 1483] fstat64(8, {st_mode=S_IFREG|0755, st_size=953468, ...}) = 0
[pid 1483] old_mmap(NULL, 895116, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 8, 0) = 0x2f3b0000
[pid 1483] mprotect(0x2f477000, 65536, PROT_NONE) = 0
[pid 1483] old_mmap(0x2f487000, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 8, 0xc7000) = 0x2f487000
[pid 1483] close(8) = 0
[pid 1483] open("/usr/local/lib/mylibs/libXext.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 1483] open("/usr/local/lib/libXext.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 1483] open("/usr/lib/libXext.so.6", O_RDONLY) = 8
[pid 1483] read(8, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0*\0\1\0\0\0\340)\0\0004\0\0\0"..., 512) = 512
[pid 1483] fstat64(8, {st_mode=S_IFREG|0755, st_size=61440, ...}) = 0
[pid 1483] old_mmap(NULL, 114084, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 8, 0) = 0x2f48c000
[pid 1483] mprotect(0x2f498000, 61440, PROT_NONE) = 0
[pid 1483] old_mmap(0x2f4a7000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 8, 0xb000) = 0x2f4a7000
[pid 1483] close(8) = 0
[pid 1483] open("/usr/local/lib/mylibs/libxcb-xlib.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 1483] open("/usr/local/lib/libxcb-xlib.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 1483] open("/usr/lib/libxcb-xlib.so.0", O_RDONLY) = 8
[pid 1483] read(8, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0*\0\1\0\0\0\300\5\0\0004\0\0\0"..., 512) = 512
[pid 1483] fstat64(8, {st_mode=S_IFREG|0755, st_size=5786, ...}) = 0
[pid 1483] old_mmap(NULL, 68112, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 8, 0) = 0x2f4a8000
[pid 1483] mprotect(0x2f4a9000, 61440, PROT_NONE) = 0
[pid 1483] old_mmap(0x2f4b8000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 8, 0) = 0x2f4b8000
[pid 1483] close(8) = 0
[pid 1483] open("/usr/local/lib/mylibs/libxcb.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 1483] open("/usr/local/lib/libxcb.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 1483] open("/usr/lib/libxcb.so.1", O_RDONLY) = 8
[pid 1483] read(8, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0*\0\1\0\0\0\300u\0\0004\0\0\0"..., 512) = 512
[pid 1483] fstat64(8, {st_mode=S_IFREG|0755, st_size=112671, ...}) = 0
[pid 1483] old_mmap(NULL, 144212, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 8, 0) = 0x2f4bc000
[pid 1483] mprotect(0x2f4cf000, 65536, PROT_NONE) = 0
[pid 1483] old_mmap(0x2f4df000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 8, 0x13000) = 0x2f4df000
[pid 1483] close(8) = 0
[pid 1483] open("/usr/lib/libXau.so.6", O_RDONLY) = 8
[pid 1483] read(8, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0*\0\1\0\0\0\240\n\0\0004\0\0\0"..., 512) = 512
[pid 1483] fstat64(8, {st_mode=S_IFREG|0755, st_size=10880, ...}) = 0
[pid 1483] old_mmap(NULL, 71644, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 8, 0) = 0x2f4e0000
[pid 1483] mprotect(0x2f4e2000, 61440, PROT_NONE) = 0
[pid 1483] old_mmap(0x2f4f1000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 8, 0x1000) = 0x2f4f1000
[pid 1483] close(8) = 0
[pid 1483] open("/usr/lib/libXdmcp.so.6", O_RDONLY) = 8
[pid 1483] read(8, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0*\0\1\0\0\0\0\20\0\0004\0\0\0"..., 512) = 512
[pid 1483] fstat64(8, {st_mode=S_IFREG|0755, st_size=23841, ...}) = 0
[pid 1483] old_mmap(NULL, 80376, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 8, 0) = 0x2f4f4000
[pid 1483] mprotect(0x2f4f8000, 61440, PROT_NONE) = 0
[pid 1483] old_mmap(0x2f507000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 8, 0x3000) = 0x2f507000
[pid 1483] close(8) = 0
[pid 1483] getdents(7, /* 0 entries */, 4096) = 0
[pid 1483] close(7) = 0
[pid 1483] munmap(0x2f398000, 83288) = 0
[pid 1483] munmap(0x2f48c000, 114084) = 0
[pid 1483] munmap(0x2f3b0000, 895116) = 0
[pid 1483] munmap(0x2f4a8000, 68112) = 0
[pid 1483] munmap(0x2f4bc000, 144212) = 0
[pid 1483] munmap(0x2f4e0000, 71644) = 0
[pid 1483] munmap(0x2f4f4000, 80376) = 0
[pid 1483] open("/dev/fb1", O_RDWR) = 7
[pid 1483] fcntl64(7, F_SETFD, FD_CLOEXEC) = 0
[pid 1483] setsid() = 1483
[pid 1483] open("/dev/tty0", O_RDONLY|O_NOCTTY) = 8
[pid 1483] ioctl(8, 0x5603, 0x7bbc1d2a) = 0
[pid 1483] ioctl(8, 0x5600, 0x497658) = 0
[pid 1483] ioctl(7, 0x460f, 0x7bbc1d18) = 0
[pid 1483] fstat64(7, {st_mode=S_IFCHR|0600, st_rdev=makedev(29, 1), ...}) = 0
[pid 1483] ioctl(7, 0x4610, 0x7bbc1c28) = 0
[pid 1483] ioctl(8, 0x5606, 0x2) = 0
Notez que le directfb lit le fichier/etc/directfbrc (vérifier son contenu avant). Rien ne sera imprimé après cela.
system=fbdev
fbdev=/dev/fb1
primary-layer=1
no-cursor
bg-color=00000000
disable-module=lirc
disable-module=keyboard
disable-module=ps2mouse
mode=1280x720-60
pixelformat=ARGB
depth=32
hardware
desktop-buffer-mode=backvideo
Vous avez des idées? Thaks beaucoup encore.
Oui, le deuxième processus fonctionne parfaitement lorsque le premier ne fonctionne pas. J'utilisais directFB pour les deux processus. J'essaie de me débarrasser de dfb dans le premier parce que le second peut tomber en panne (c'est un interpréteur de script) et quand cela arrive, le directfb plante aussi le premier. Je ne suis pas sûr que directfb se verrouille sur/dev/fb0, cependant, la seule chose que fait le premier processus est d'ouvrir/dev/fb0 et d'écrire dessus ...qu'il fait une pause, gardant le descripteur/dev/fb0 encore ouvert. Vérifiez la sortie strace pour le second dans la réponse suivante. Merci beaucoup. – Marcus