Alexander/st
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add xmalloc and xrealloc wrappers

Browse Source 
If malloc  or realloc fail they return NULL. Theorically this condition
should be tested in the code, but it's a strange condition today (basically
if this is hapenning thenyou have a big problem), and even Linux never returns
NULL in the default configuration (only if the process don't have room in
the space address, something a bit impossible in the case of st). But stis
enough small for being executed in low resources computers where this can be
a real problem. So the easy way is creating a wrappers function for them and
call to die in case of error.
---
 st.c |   44 +++++++++++++++++++++++++++++++-------------
 1 file changed, 31 insertions(+), 13 deletions(-)
This commit is contained in:
Roberto E. Vargas Caballero 2012-09-12 21:25:35 +02:00
parent 8f1144edee
commit b9d5fec4f2
1 changed files with 31 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
st.c
View File

@ -326,6 +326,9 @@ static int utf8encode(long *, char *);
static int utf8size(char *);
static int isfullutf8(char *, int);
static void *xmalloc(size_t);
static void *xrealloc(void *, size_t);
static void (*handler[LASTEvent])(XEvent *) = {
[KeyPress] = kpress,
[ClientMessage] = cmessage,
@ -359,6 +362,21 @@ static char *opt_title = NULL;
static char *opt_embed = NULL;
static char *opt_class = NULL;
void *
xmalloc(size_t len) {
void *p = malloc(len);
if(!p)
die("Out of memory");
return p;
}
void *
xrealloc(void *p, size_t len) {
if((p = realloc(p, len)) == NULL)
die("Out of memory");
return p;
}
int
utf8decode(char *s, long *u) {
uchar c;
@ -565,7 +583,7 @@ selcopy(void) {
else {
bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
ptr = str = malloc(bufsize);
ptr = str = xmalloc(bufsize);
/* append every set & selected glyph to the selection */
for(y = 0; y < term.row; y++) {
@ -918,14 +936,14 @@ void
tnew(int col, int row) {
/* set screen size */
term.row = row, term.col = col;
term.line = malloc(term.row * sizeof(Line));
term.alt = malloc(term.row * sizeof(Line));
term.dirty = malloc(term.row * sizeof(*term.dirty));
term.tabs = malloc(term.col * sizeof(*term.tabs));
term.line = xmalloc(term.row * sizeof(Line));
term.alt = xmalloc(term.row * sizeof(Line));
term.dirty = xmalloc(term.row * sizeof(*term.dirty));
term.tabs = xmalloc(term.col * sizeof(*term.tabs));
for(row = 0; row < term.row; row++) {
term.line[row] = malloc(term.col * sizeof(Glyph));
term.alt [row] = malloc(term.col * sizeof(Glyph));
term.line[row] = xmalloc(term.col * sizeof(Glyph));
term.alt [row] = xmalloc(term.col * sizeof(Glyph));
term.dirty[row] = 0;
}
memset(term.tabs, 0, term.col * sizeof(*term.tabs));
@ -1761,16 +1779,16 @@ tresize(int col, int row) {
}
/* resize to new height */
term.line = realloc(term.line, row * sizeof(Line));
term.alt = realloc(term.alt, row * sizeof(Line));
term.dirty = realloc(term.dirty, row * sizeof(*term.dirty));
term.tabs = realloc(term.tabs, col * sizeof(*term.tabs));
term.line = xrealloc(term.line, row * sizeof(Line));
term.alt = xrealloc(term.alt, row * sizeof(Line));
term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
/* resize each row to new width, zero-pad if needed */
for(i = 0; i < minrow; i++) {
term.dirty[i] = 1;
term.line[i] = realloc(term.line[i], col * sizeof(Glyph));
term.alt[i] = realloc(term.alt[i], col * sizeof(Glyph));
term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
for(x = mincol; x < col; x++) {
term.line[i][x].state = 0;
term.alt[i][x].state = 0;