bool zmq::connect_session_t::attached (const blob_t &peer_identity_) { // If there was no previous connection... if (!connected) { // Peer has transient identity. if (peer_identity_.empty () || peer_identity_ [0] == 0) { connected = true; return true; } // Peer has strong identity. Let's register it and check whether noone // else is using the same identity. if (!register_session (peer_identity_, this)) { log ("DPID: duplicate peer identity - disconnecting peer"); return false; } connected = true; peer_identity = peer_identity_; return true; } // New engine from listener can conflict with existing engine. // Alternatively, new engine created by reconnection process can // conflict with engine supplied by listener in the meantime. if (has_engine ()) { log ("DPID: duplicate peer identity - disconnecting peer"); return false; } // If there have been a connection before, we have to check whether // peer's identity haven't changed in the meantime. if ((peer_identity_.empty () || peer_identity_ [0] == 0) && peer_identity.empty ()) return true; if (peer_identity != peer_identity_) { log ("CHID: peer have changed identity - disconnecting peer"); return false; } return true; }
static void processes(void) { const struct intel_execution_engine *e; unsigned engines[16]; int num_engines; struct rlimit rlim; unsigned num_ctx; uint32_t name; int fd, *fds; fd = drm_open_driver(DRIVER_INTEL); num_ctx = get_num_contexts(fd); num_engines = 0; for (e = intel_execution_engines; e->name; e++) { if (e->exec_id == 0) continue; if (!has_engine(fd, e)) continue; if (e->exec_id == I915_EXEC_BSD) { int is_bsd2 = e->flags != 0; if (gem_has_bsd2(fd) != is_bsd2) continue; } engines[num_engines++] = e->exec_id | e->flags; if (num_engines == ARRAY_SIZE(engines)) break; } /* tweak rlimits to allow us to create this many files */ igt_assert(getrlimit(RLIMIT_NOFILE, &rlim) == 0); if (rlim.rlim_cur < ALIGN(num_ctx + 1024, 1024)) { rlim.rlim_cur = ALIGN(num_ctx + 1024, 1024); if (rlim.rlim_cur > rlim.rlim_max) rlim.rlim_max = rlim.rlim_cur; igt_assert(setrlimit(RLIMIT_NOFILE, &rlim) == 0); } fds = malloc(num_ctx * sizeof(int)); igt_assert(fds); for (unsigned n = 0; n < num_ctx; n++) { fds[n] = drm_open_driver(DRIVER_INTEL); if (fds[n] == -1) { int err = errno; for (unsigned i = n; i--; ) close(fds[i]); free(fds); errno = err; igt_assert_f(0, "failed to create context %lld/%lld\n", (long long)n, (long long)num_ctx); } } if (1) { uint32_t bbe = MI_BATCH_BUFFER_END; name = gem_create(fd, 4096); gem_write(fd, name, 0, &bbe, sizeof(bbe)); name = gem_flink(fd, name); } igt_fork(child, NUM_THREADS) { struct drm_i915_gem_execbuffer2 execbuf; struct drm_i915_gem_exec_object2 obj; memset(&obj, 0, sizeof(obj)); memset(&execbuf, 0, sizeof(execbuf)); execbuf.buffers_ptr = (uintptr_t)&obj; execbuf.buffer_count = 1; igt_permute_array(fds, num_ctx, xchg_int); for (unsigned n = 0; n < num_ctx; n++) { obj.handle = gem_open(fds[n], name); execbuf.flags = engines[n % num_engines]; gem_execbuf(fds[n], &execbuf); gem_close(fds[n], obj.handle); } } igt_waitchildren(); for (unsigned n = 0; n < num_ctx; n++) close(fds[n]); free(fds); close(fd); }