Val _lib7_Time_timeofday (Task* task, Val arg) {
//====================
//
// Mythryl type: Void -> (one_word_int::Int, Int)
//
// Return the time of day.
// NOTE: gettimeofday() is not POSIX (time() returns seconds, and is POSIX and ISO C).
//
// This fn gets bound as get_time_of_day in:
//
// src/lib/std/src/time-guts.pkg
ENTER_MYTHRYL_CALLABLE_C_FN(__func__);
int c_microseconds;
Val lib7_seconds;
RELEASE_MYTHRYL_HEAP( task->hostthread, __func__, NULL );
//
int c_seconds = _lib7_time_gettimeofday( &c_microseconds );
//
RECOVER_MYTHRYL_HEAP( task->hostthread, __func__ );
lib7_seconds = make_one_word_int(task, c_seconds );
Val result = make_two_slot_record(task, lib7_seconds, TAGGED_INT_FROM_C_INT( c_microseconds ) );
EXIT_MYTHRYL_CALLABLE_C_FN(__func__);
return result;
}
Val _lib7_P_IO_pipe (Task* task, Val arg) {
//===============
//
// Mythryl type: Void -> (Int, Int)
//
// Create a pipe and return its input and output descriptors.
//
// This fn gets bound as pipe' in:
//
// src/lib/std/src/psx/posix-io.pkg
// src/lib/std/src/psx/posix-io-64.pkg
ENTER_MYTHRYL_CALLABLE_C_FN(__func__);
int status;
int fds[2];
RELEASE_MYTHRYL_HEAP( task->hostthread, __func__, NULL );
//
status = pipe(fds);
//
RECOVER_MYTHRYL_HEAP( task->hostthread, __func__ );
// printf("Created pipe %d -> %d -- pipe.c thread id %lx\n", fds[0], fds[1], pth__get_hostthread_id); fflush(stdout);
Val result;
if (status == -1) result = RAISE_SYSERR__MAY_HEAPCLEAN(task, -1, NULL);
else result = make_two_slot_record( task, TAGGED_INT_FROM_C_INT(fds[0]), TAGGED_INT_FROM_C_INT(fds[1]) );
EXIT_MYTHRYL_CALLABLE_C_FN(__func__);
return result;
}
Val _lib7_Sock_accept (Task* task, Val arg) {
//=================
//
// Mythryl type: Socket -> (Socket, Address)
//
// This fn gets bound as accept' in:
//
// src/lib/std/src/socket/socket-guts.pkg
ENTER_MYTHRYL_CALLABLE_C_FN("_lib7_Sock_accept");
int socket = TAGGED_INT_TO_C_INT( arg ); // Last use of 'arg'.
char address_buf[ MAX_SOCK_ADDR_BYTESIZE ];
socklen_t address_len = MAX_SOCK_ADDR_BYTESIZE;
int new_socket;
RELEASE_MYTHRYL_HEAP( task->pthread, "_lib7_Sock_accept", NULL );
//
/* do { */ /* Backed out 2010-02-26 CrT: See discussion at bottom of src/c/lib/socket/connect.c */
new_socket = accept (socket, (struct sockaddr*) address_buf, &address_len);
/* } while (new_socket < 0 && errno == EINTR); */ /* Restart if interrupted by a SIGALRM or SIGCHLD or whatever. */
//
RECOVER_MYTHRYL_HEAP( task->pthread, "_lib7_Sock_accept" );
if (new_socket == -1) {
//
return RAISE_SYSERR__MAY_HEAPCLEAN( task, new_socket, NULL);
//
} else {
//
Val data = make_biwordslots_vector_sized_in_bytes__may_heapclean( task, address_buf, address_len, NULL );
Val address = make_vector_header( task, UNT8_RO_VECTOR_TAGWORD, data, address_len);
return make_two_slot_record(task, TAGGED_INT_FROM_C_INT( new_socket ), address);
}
}
Val _lib7_Sock_frominetaddr (Task* task, Val arg) {
//=======================
//
// Mythryl type: Internet_Address -> (Internet_Address, Int)
//
// Given a INET-domain socket address, return the INET address and port number.
//
// This fn gets bound as from_inet_addr in:
//
// src/lib/std/src/socket/internet-socket.pkg
ENTER_MYTHRYL_CALLABLE_C_FN("_lib7_Sock_frominetaddr");
struct sockaddr_in* addr
=
GET_VECTOR_DATACHUNK_AS( struct sockaddr_in*, arg ); // Last use of 'arg'.
ASSERT( addr->sin_family == AF_INET );
Val data = make_biwordslots_vector_sized_in_bytes__may_heapclean( task, &(addr->sin_addr), sizeof(struct in_addr), NULL );
Val inAddr = make_vector_header( task, UNT8_RO_VECTOR_TAGWORD, data, sizeof(struct in_addr) );
return make_two_slot_record(task, inAddr, TAGGED_INT_FROM_C_INT(ntohs(addr->sin_port)) );
}
Val raise_error__may_heapclean (
//==========================
//
Task* task,
const char* altMsg,
const char* at, // C sourcefile and line number raising this error: "<foo.c:37>"
Roots* extra_roots
) {
// Raise the Mythryl exception RUNTIME_EXCEPTION, which is defined as:
//
// exception RUNTIME_EXCEPTION (String, Null_Or(System_Error) );
//
// We normally get invoked via either the
// RAISE_SYSERR__MAY_HEAPCLEAN or RAISE_ERROR__MAY_HEAPCLEAN macro from
//
// src/c/lib/raise-error.h
//
// For the time being, we use the errno value as the System_Error; eventually that
// will be represented by an (Int, String) pair. If alt_msg is non-zero,
// then use it as the error string and use NULL for the System_Error.
int error_number = errno; // Various calls can trash this value so preserve it early.
const char* msg;
char buf[32];
Val null_or_errno;
if (altMsg != NULL) {
//
msg = altMsg;
null_or_errno = OPTION_NULL;
} else if ((msg = strerror(error_number)) != NULL) {
null_or_errno = OPTION_THE( task, TAGGED_INT_FROM_C_INT(error_number) );
} else {
sprintf(buf, "<unknown error %d>", error_number);
msg = buf;
null_or_errno = OPTION_THE( task, TAGGED_INT_FROM_C_INT(error_number) );
}
#if (defined(DEBUG_OS_INTERFACE) || defined(DEBUG_TRACE_CCALL))
debug_say ("RaiseSysError: errno = %d, msg = \"%s\"\n",
(altMsg != NULL) ? -1 : error_number, msg);
#endif
Roots roots1 = { &null_or_errno, extra_roots };
Val errno_string = make_ascii_string_from_c_string__may_heapclean (task, msg, &roots1 );
Val at_list; // [] or [ "<foo.c:187>" ].
//
if (at != NULL) {
//
Roots roots2 = { &errno_string, &roots1 };
Val at_cstring
=
make_ascii_string_from_c_string__may_heapclean (task, at, &roots2 );
at_list = LIST_CONS(task, at_cstring, LIST_NIL);
} else {
at_list = LIST_NIL;
}
Val arg = make_two_slot_record( task, errno_string, null_or_errno);
Val syserr_exception = MAKE_EXCEPTION(task, PTR_CAST( Val, RUNTIME_EXCEPTION__GLOBAL), arg, at_list);
// Modify the task state so that 'syserr_exception'
// will be raised when Mythryl execution resumes:
//
raise_mythryl_exception( task, syserr_exception ); // raise_mythryl_exception is from src/c/main/run-mythryl-code-and-runtime-eventloop.c
return syserr_exception;
} // fun raise_error__may_heapclean
Val _lib7_Sock_recvbuffrom (Task* task, Val arg) {
//======================
//
// Mythryl type: (Socket, rw_vector_of_one_byte_unts::Rw_Vector, Int, Int, Bool, Bool) -> (Int, Addr)
//
// The arguments are:
// socket,
// data buffer,
// start position,
// number of bytes,
// OOB flag
// peek flag.
//
// The result is:
// number of bytes read
// source address.
//
// This fn gets bound as recv_from_a in:
//
// src/lib/std/src/socket/socket-guts.pkg
ENTER_MYTHRYL_CALLABLE_C_FN(__func__);
char address_buf[ MAX_SOCK_ADDR_BYTESIZE ];
socklen_t address_len = MAX_SOCK_ADDR_BYTESIZE;
int socket = GET_TUPLE_SLOT_AS_INT( arg, 0);
// Val buf = GET_TUPLE_SLOT_AS_VAL( arg, 1); // Mythryl buffer to read bytes into. // We'll fetch this after the call, since it may move around during the call.
int offset = GET_TUPLE_SLOT_AS_INT( arg, 2); // Offset within buf to read bytes into.
int nbytes = GET_TUPLE_SLOT_AS_INT( arg, 3); // Number of bytes to read.
int flag = 0;
int n;
if (GET_TUPLE_SLOT_AS_VAL(arg, 4) == HEAP_TRUE) flag |= MSG_OOB;
if (GET_TUPLE_SLOT_AS_VAL(arg, 5) == HEAP_TRUE) flag |= MSG_PEEK;
// We cannot reference anything on the Mythryl heap
// between RELEASE_MYTHRYL_HEAP and RECOVER_MYTHRYL_HEAP
// because garbage collection might be moving
// it around, so allocate a C-side read buffer:
//
Mythryl_Heap_Value_Buffer readbuf_buf;
//
{ char* c_readbuf = buffer_mythryl_heap_nonvalue( &readbuf_buf, nbytes );
RELEASE_MYTHRYL_HEAP( task->hostthread, __func__, &arg ); // 'arg' is still live here!
//
do {
//
n = recvfrom( socket,
c_readbuf,
nbytes,
flag,
(struct sockaddr *)address_buf,
&address_len
);
} while (n < 0 && errno == EINTR); // Restart if interrupted by a SIGALRM or SIGCHLD or whatever.
//
RECOVER_MYTHRYL_HEAP( task->hostthread, __func__ );
if (n < 0) {
unbuffer_mythryl_heap_value( &readbuf_buf );
return RAISE_SYSERR__MAY_HEAPCLEAN(task, status, NULL);
}
Val buf = GET_TUPLE_SLOT_AS_VAL( arg, 1); // Mythryl buffer to read bytes into.
char* bufstart = HEAP_STRING_AS_C_STRING(buf) + offset;
memcpy( bufstart, c_readbuf, n);
unbuffer_mythryl_heap_value( &readbuf_buf );
}
Val data = make_biwordslots_vector_sized_in_bytes__may_heapclean( task, address_buf, address_len, NULL );
Val address = make_vector_header( task, UNT8_RO_VECTOR_TAGWORD, data, address_len);
Val result = make_two_slot_record(task, TAGGED_INT_FROM_C_INT(n), address);
EXIT_MYTHRYL_CALLABLE_C_FN(__func__);
return result;
}
Task* import_heap_image__may_heapclean (const char* fname, Heapcleaner_Args* params, Roots* extra_roots) {
// ================================
//
// This fn is called (only) by load_and_run_heap_image__may_heapclean in src/c/main/load-and-run-heap-image.c
//
Task* task;
Heapfile_Header image_header;
Heap_Header heap_header;
Val *externs;
Pthread_Image image;
Inbuf inbuf;
if (fname != NULL) {
//
// Resolve the name of the image.
// If the file exists use it, otherwise try the
// pathname with the machine ID as an extension.
if ((inbuf.file = fopen(fname, "rb"))) {
//
if (verbosity__global > 0) say("loading %s ", fname);
} else {
//
if ((inbuf.file = fopen(fname, "rb"))) {
//
if (verbosity__global > 0) say("loading %s ", fname);
} else {
die ("unable to open heap image \"%s\"\n", fname);
}
}
inbuf.needs_to_be_byteswapped = FALSE;
inbuf.buf = NULL;
inbuf.nbytes = 0;
} else {
//
// fname == NULL, so try to find
// an in-core heap image:
#if defined(DLOPEN) && !defined(OPSYS_WIN32)
//
void *lib = dlopen (NULL, RTLD_LAZY);
void *vimg, *vimglenptr;
if ((vimg = dlsym(lib,HEAP_IMAGE_SYMBOL )) == NULL) die("no in-core heap image found\n");
if ((vimglenptr = dlsym(lib,HEAP_IMAGE_LEN_SYMBOL)) == NULL) die("unable to find length of in-core heap image\n");
inbuf.file = NULL;
inbuf.needs_to_be_byteswapped = FALSE;
inbuf.base = vimg;
inbuf.buf = inbuf.base;
inbuf.nbytes = *(long*)vimglenptr;
#else
die("in-core heap images not implemented\n");
#endif
}
READ(&inbuf, image_header);
if (image_header.byte_order != ORDER) die ("incorrect byte order in heap image\n");
if (image_header.magic != IMAGE_MAGIC) die ("bad magic number (%#x) in heap image\n", image_header.magic);
if ((image_header.kind != EXPORT_HEAP_IMAGE) && (image_header.kind != EXPORT_FN_IMAGE)) die ("bad image kind (%d) in heap image\n", image_header.kind);
READ(&inbuf, heap_header);
// Check for command-line overrides of heap parameters:
//
if (params->agegroup0_buffer_bytesize == 0) {
params->agegroup0_buffer_bytesize = heap_header.agegroup0_buffer_bytesize;
}
if (params->active_agegroups < heap_header.active_agegroups) {
params->active_agegroups = heap_header.active_agegroups;
}
if (params->oldest_agegroup_retaining_fromspace_sibs_between_heapcleanings < 0) {
params->oldest_agegroup_retaining_fromspace_sibs_between_heapcleanings = heap_header.oldest_agegroup_retaining_fromspace_sibs_between_heapcleanings;
}
task = make_task( /*is_boot:*/FALSE, params ); // make_task def in src/c/main/runtime-state.c
// Get the run-time pointers into the heap:
//
*PTR_CAST( Val*, PERVASIVE_PACKAGE_PICKLE_LIST_REFCELL__GLOBAL )
=
heap_header.pervasive_package_pickle_list;
// This carefully constructed fake looks like a normal
// compiled package from the Mythryl side but actually
// links to compile C code -- see the hack in
//
// src/c/main/load-compiledfiles.c
//
runtime_package__global = heap_header.runtime_pseudopackage;
#ifdef ASM_MATH
mathvec__global = heap_header.math_package;
#endif
externs = heapio__read_externs_table (&inbuf); // Read the externals table.
READ(&inbuf, image); // Read and initialize the Mythryl state info.
//
if (image_header.kind == EXPORT_HEAP_IMAGE) {
// Load the live registers:
//
ASSIGN( POSIX_INTERPROCESS_SIGNAL_HANDLER_REFCELL__GLOBAL,
image.posix_interprocess_signal_handler
);
//
task->argument = image.stdArg;
task->fate = image.stdCont;
task->current_closure = image.stdClos;
task->program_counter = image.pc;
task->exception_fate = image.exception_fate;
task->current_thread = image.current_thread;
//
task->callee_saved_registers[0] = image.calleeSave[0];
task->callee_saved_registers[1] = image.calleeSave[1];
task->callee_saved_registers[2] = image.calleeSave[2];
read_heap (&inbuf, &heap_header, task, externs); // Read the Mythryl heap.
/* heapcleaner_messages_are_enabled__global = TRUE; */ // Heapcleaning messages are on by default for interactive images.
} else { // EXPORT_FN_IMAGE
// Restore the signal handler:
//
ASSIGN( POSIX_INTERPROCESS_SIGNAL_HANDLER_REFCELL__GLOBAL, image.posix_interprocess_signal_handler );
// Read the Mythryl heap:
//
task->argument = image.stdArg;
read_heap (&inbuf, &heap_header, task, externs);
// Initialize the calling context (taken from run_mythryl_function__may_heapclean): // run_mythryl_function__may_heapclean def in src/c/main/run-mythryl-code-and-runtime-eventloop.c
//
Val function_to_run = task->argument;
//
task->exception_fate = PTR_CAST( Val, handle_uncaught_exception_closure_v + 1 );
task->current_thread = HEAP_VOID;
//
task->fate = PTR_CAST( Val, return_to_c_level_c );
task->current_closure = function_to_run;
//
task->program_counter =
task->link_register = GET_CODE_ADDRESS_FROM_CLOSURE( function_to_run ); // Last use of 'function_to_run'.
// Set up the arguments to the imported function:
//
Val program_name = make_ascii_string_from_c_string__may_heapclean(task, mythryl_program_name__global, extra_roots); Roots roots1 = { &program_name, extra_roots };
//
Val args = make_ascii_strings_from_vector_of_c_strings__may_heapclean (task, commandline_args_without_argv0_or_runtime_args__global, &roots1 );
task->argument = make_two_slot_record( task, program_name, args );
// debug_say("arg = %#x : [%#x, %#x]\n", task->argument, GET_TUPLE_SLOT_AS_VAL(task->argument, 0), GET_TUPLE_SLOT_AS_VAL(task->argument, 1));
// Heapcleaner messages are off by
// default for spawn_to_disk images:
//
heapcleaner_messages_are_enabled__global = FALSE;
}
FREE( externs );
if (inbuf.file) fclose (inbuf.file);
if (verbosity__global > 0) say(" done\n");
return task;
} // fun import_heap_image__may_heapclean
