// Exit because of an input read error.
static void read_error_exit(void)
{
if (silent_mode) /* Normal way to exit for "ex -s" */
getout(0);
STRCPY(IObuff, _("Vim: Error reading input, exiting...\n"));
preserve_exit();
}
void *xmalloc(size_t size)
{
void *ret = try_malloc(size);
if (!ret) {
OUT_STR("Vim: Error: Out of memory.\n");
preserve_exit();
}
return ret;
}
// This function handles deadly signals.
// It tries to preserve any swap files and exit properly.
// (partly from Elvis).
// NOTE: Avoid unsafe functions, such as allocating memory, they can result in
// a deadlock.
static void deadly_signal(int signum)
{
// Set the v:dying variable.
set_vim_var_nr(VV_DYING, 1);
snprintf((char *)IObuff, sizeof(IObuff), "Vim: Caught deadly signal '%s'\n",
signal_name(signum));
// Preserve files and exit.
preserve_exit();
}
// This function handles deadly signals.
// It tries to preserve any swap files and exit properly.
// (partly from Elvis).
// NOTE: Avoid unsafe functions, such as allocating memory, they can result in
// a deadlock.
static void deadly_signal(int signum)
{
// Set the v:dying variable.
set_vim_var_nr(VV_DYING, 1);
sprintf((char *)IObuff, "Vim: Caught deadly signal '%s'\n",
signal_name(signum));
// Preserve files and exit. This sets the really_exiting flag to prevent
// calling free().
preserve_exit();
}
void *xmallocz(size_t size)
{
size_t total_size = size + 1;
void *ret;
if (total_size < size) {
OUT_STR("Vim: Data too large to fit into virtual memory space\n");
preserve_exit();
}
ret = xmalloc(total_size);
((char*)ret)[size] = 0;
return ret;
}
char * xstrdup(const char *str)
{
char *ret = strdup(str);
if (!ret) {
try_to_free_memory();
ret = strdup(str);
if (!ret) {
OUT_STR("Vim: Error: Out of memory.\n");
preserve_exit();
}
}
return ret;
}
void *xrealloc(void *ptr, size_t size)
{
void *ret = realloc(ptr, size);
if (!ret && !size)
ret = realloc(ptr, 1);
if (!ret) {
try_to_free_memory();
ret = realloc(ptr, size);
if (!ret && !size)
ret = realloc(ptr, 1);
if (!ret) {
OUT_STR("Vim: Error: Out of memory.\n");
preserve_exit();
}
}
return ret;
}
void *xcalloc(size_t count, size_t size)
{
void *ret = calloc(count, size);
if (!ret && (!count || !size))
ret = calloc(1, 1);
if (!ret) {
try_to_free_memory();
ret = calloc(count, size);
if (!ret && (!count || !size))
ret = calloc(1, 1);
if (!ret) {
OUT_STR("Vim: Error: Out of memory.\n");
preserve_exit();
}
}
return ret;
}
// Called by the by the 'idle' handle to emulate a reading event
static void fread_idle_cb(uv_idle_t *handle)
{
uv_fs_t req;
RStream *rstream = handle_get_rstream((uv_handle_t *)handle);
rstream->uvbuf.len = rbuffer_available(rstream->buffer);
rstream->uvbuf.base = rbuffer_write_ptr(rstream->buffer);
// the offset argument to uv_fs_read is int64_t, could someone really try
// to read more than 9 quintillion (9e18) bytes?
// upcast is meant to avoid tautological condition warning on 32 bits
uintmax_t fpos_intmax = rstream->fpos;
if (fpos_intmax > INT64_MAX) {
ELOG("stream offset overflow");
preserve_exit();
}
// Synchronous read
uv_fs_read(
uv_default_loop(),
&req,
rstream->fd,
&rstream->uvbuf,
1,
(int64_t) rstream->fpos,
NULL);
uv_fs_req_cleanup(&req);
if (req.result <= 0) {
uv_idle_stop(rstream->fread_idle);
return;
}
// no errors (req.result (ssize_t) is positive), it's safe to cast.
size_t nread = (size_t) req.result;
rbuffer_produced(rstream->buffer, nread);
rstream->fpos += nread;
}