aboutsummaryrefslogtreecommitdiff
path: root/editors
diff options
context:
space:
mode:
authorGravatar James Byrne <james.byrne@origamienergy.com>2019-07-02 11:35:03 +0200
committerGravatar Denys Vlasenko <vda.linux@googlemail.com>2019-07-02 11:35:03 +0200
commit6937487be73cd4563b876413277a295a5fe2f32c (patch)
treef16cc9999a7c827891e6ec8d99c699fc791008ee /editors
parentcaecfdc20d450686cd1f7e9b5f650322f894b3c2 (diff)
downloadbusybox-6937487be73cd4563b876413277a295a5fe2f32c.tar.gz
busybox-6937487be73cd4563b876413277a295a5fe2f32c.tar.bz2
libbb: reduce the overhead of single parameter bb_error_msg() calls
Back in 2007, commit 0c97c9d43707 ("'simple' error message functions by Loic Grenie") introduced bb_simple_perror_msg() to allow for a lower overhead call to bb_perror_msg() when only a string was being printed with no parameters. This saves space for some CPU architectures because it avoids the overhead of a call to a variadic function. However there has never been a simple version of bb_error_msg(), and since 2007 many new calls to bb_perror_msg() have been added that only take a single parameter and so could have been using bb_simple_perror_message(). This changeset introduces 'simple' versions of bb_info_msg(), bb_error_msg(), bb_error_msg_and_die(), bb_herror_msg() and bb_herror_msg_and_die(), and replaces all calls that only take a single parameter, or use something like ("%s", arg), with calls to the corresponding 'simple' version. Since it is likely that single parameter calls to the variadic functions may be accidentally reintroduced in the future a new debugging config option WARN_SIMPLE_MSG has been introduced. This uses some macro magic which will cause any such calls to generate a warning, but this is turned off by default to avoid use of the unpleasant macros in normal circumstances. This is a large changeset due to the number of calls that have been replaced. The only files that contain changes other than simple substitution of function calls are libbb.h, libbb/herror_msg.c, libbb/verror_msg.c and libbb/xfuncs_printf.c. In miscutils/devfsd.c, networking/udhcp/common.h and util-linux/mdev.c additonal macros have been added for logging so that single parameter and multiple parameter logging variants exist. The amount of space saved varies considerably by architecture, and was found to be as follows (for 'defconfig' using GCC 7.4): Arm: -92 bytes MIPS: -52 bytes PPC: -1836 bytes x86_64: -938 bytes Note that for the MIPS architecture only an exception had to be made disabling the 'simple' calls for 'udhcp' (in networking/udhcp/common.h) because it made these files larger on MIPS. Signed-off-by: James Byrne <james.byrne@origamienergy.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'editors')
-rw-r--r--editors/awk.c4
-rw-r--r--editors/diff.c4
-rw-r--r--editors/ed.c34
-rw-r--r--editors/patch_bbox.c6
-rw-r--r--editors/patch_toybox.c2
-rw-r--r--editors/sed.c18
-rw-r--r--editors/vi.c2
7 files changed, 35 insertions, 35 deletions
diff --git a/editors/awk.c b/editors/awk.c
index d25508e5d..f19990901 100644
--- a/editors/awk.c
+++ b/editors/awk.c
@@ -2633,7 +2633,7 @@ static var *evaluate(node *op, var *res)
if (opn == '|') {
rsm->F = popen(R.s, "w");
if (rsm->F == NULL)
- bb_perror_msg_and_die("popen");
+ bb_simple_perror_msg_and_die("popen");
rsm->is_pipe = 1;
} else {
rsm->F = xfopen(R.s, opn=='w' ? "w" : "a");
@@ -3246,7 +3246,7 @@ int awk_main(int argc UNUSED_PARAM, char **argv)
argv += optind;
//argc -= optind;
if (opt & OPT_W)
- bb_error_msg("warning: option -W is ignored");
+ bb_simple_error_msg("warning: option -W is ignored");
if (opt & OPT_F) {
unescape_string_in_place(opt_F);
setvar_s(intvar[FS], opt_F);
diff --git a/editors/diff.c b/editors/diff.c
index 1462a9b18..dc40ab4f1 100644
--- a/editors/diff.c
+++ b/editors/diff.c
@@ -1006,7 +1006,7 @@ int diff_main(int argc UNUSED_PARAM, char **argv)
xfunc_error_retval = 1;
if (gotstdin && (S_ISDIR(stb[0].st_mode) || S_ISDIR(stb[1].st_mode)))
- bb_error_msg_and_die("can't compare stdin to a directory");
+ bb_simple_error_msg_and_die("can't compare stdin to a directory");
/* Compare metadata to check if the files are the same physical file.
*
@@ -1037,7 +1037,7 @@ int diff_main(int argc UNUSED_PARAM, char **argv)
#if ENABLE_FEATURE_DIFF_DIR
diffdir(file, s_start);
#else
- bb_error_msg_and_die("no support for directory comparison");
+ bb_simple_error_msg_and_die("no support for directory comparison");
#endif
} else {
bool dirfile = S_ISDIR(stb[0].st_mode) || S_ISDIR(stb[1].st_mode);
diff --git a/editors/ed.c b/editors/ed.c
index 1a36add39..d3ae8da92 100644
--- a/editors/ed.c
+++ b/editors/ed.c
@@ -165,7 +165,7 @@ static NOINLINE int searchLines(const char *str, int num1, int num2)
if (*str == '\0') {
if (searchString[0] == '\0') {
- bb_error_msg("no previous search string");
+ bb_simple_error_msg("no previous search string");
return 0;
}
str = searchString;
@@ -228,7 +228,7 @@ static const char* getNum(const char *cp, smallint *retHaveNum, int *retNum)
case '\'':
cp++;
if ((unsigned)(*cp - 'a') >= 26) {
- bb_error_msg("bad mark name");
+ bb_simple_error_msg("bad mark name");
return NULL;
}
haveNum = TRUE;
@@ -314,7 +314,7 @@ static int insertLine(int num, const char *data, int len)
LINE *newLp, *lp;
if ((num < 1) || (num > lastNum + 1)) {
- bb_error_msg("inserting at bad line number");
+ bb_simple_error_msg("inserting at bad line number");
return FALSE;
}
@@ -384,7 +384,7 @@ static int readLines(const char *file, int num)
char *cp;
if ((num < 1) || (num > lastNum + 1)) {
- bb_error_msg("bad line for read");
+ bb_simple_error_msg("bad line for read");
return FALSE;
}
@@ -629,7 +629,7 @@ static void subCommand(const char *cmd, int num1, int num2)
cp = buf;
if (isblank(*cp) || (*cp == '\0')) {
- bb_error_msg("bad delimiter for substitute");
+ bb_simple_error_msg("bad delimiter for substitute");
return;
}
@@ -638,7 +638,7 @@ static void subCommand(const char *cmd, int num1, int num2)
cp = strchr(cp, delim);
if (cp == NULL) {
- bb_error_msg("missing 2nd delimiter for substitute");
+ bb_simple_error_msg("missing 2nd delimiter for substitute");
return;
}
@@ -660,13 +660,13 @@ static void subCommand(const char *cmd, int num1, int num2)
printFlag = TRUE;
break;
default:
- bb_error_msg("unknown option for substitute");
+ bb_simple_error_msg("unknown option for substitute");
return;
}
if (*oldStr == '\0') {
if (searchString[0] == '\0') {
- bb_error_msg("no previous search string");
+ bb_simple_error_msg("no previous search string");
return;
}
oldStr = searchString;
@@ -846,7 +846,7 @@ static void doCommands(void)
case 'f':
if (*cp != '\0' && *cp != ' ') {
- bb_error_msg("bad file command");
+ bb_simple_error_msg("bad file command");
break;
}
cp = skip_whitespace(cp);
@@ -870,7 +870,7 @@ static void doCommands(void)
case 'k':
cp = skip_whitespace(cp);
if ((unsigned)(*cp - 'a') >= 26 || cp[1]) {
- bb_error_msg("bad mark name");
+ bb_simple_error_msg("bad mark name");
break;
}
marks[(unsigned)(*cp - 'a')] = num2;
@@ -887,7 +887,7 @@ static void doCommands(void)
case 'q':
cp = skip_whitespace(cp);
if (have1 || *cp) {
- bb_error_msg("bad quit command");
+ bb_simple_error_msg("bad quit command");
break;
}
if (!dirty)
@@ -903,12 +903,12 @@ static void doCommands(void)
case 'r':
if (*cp != '\0' && *cp != ' ') {
- bb_error_msg("bad read command");
+ bb_simple_error_msg("bad read command");
break;
}
cp = skip_whitespace(cp);
if (*cp == '\0') {
- bb_error_msg("no file name");
+ bb_simple_error_msg("no file name");
break;
}
if (!have1)
@@ -925,14 +925,14 @@ static void doCommands(void)
case 'w':
if (*cp != '\0' && *cp != ' ') {
- bb_error_msg("bad write command");
+ bb_simple_error_msg("bad write command");
break;
}
cp = skip_whitespace(cp);
if (*cp == '\0') {
cp = fileName;
if (!cp) {
- bb_error_msg("no file name specified");
+ bb_simple_error_msg("no file name specified");
break;
}
}
@@ -960,7 +960,7 @@ static void doCommands(void)
case '.':
if (have1) {
- bb_error_msg("no arguments allowed");
+ bb_simple_error_msg("no arguments allowed");
break;
}
printLines(curNum, curNum, FALSE);
@@ -984,7 +984,7 @@ static void doCommands(void)
break;
default:
- bb_error_msg("unimplemented command");
+ bb_simple_error_msg("unimplemented command");
break;
}
}
diff --git a/editors/patch_bbox.c b/editors/patch_bbox.c
index 8e09ef488..d1f1ee2d6 100644
--- a/editors/patch_bbox.c
+++ b/editors/patch_bbox.c
@@ -30,7 +30,7 @@ static unsigned copy_lines(FILE *src_stream, FILE *dst_stream, unsigned lines_co
break;
}
if (fputs(line, dst_stream) == EOF) {
- bb_perror_msg_and_die("error writing to new file");
+ bb_simple_perror_msg_and_die("error writing to new file");
}
free(line);
lines_count--;
@@ -148,7 +148,7 @@ int patch_main(int argc UNUSED_PARAM, char **argv)
new_filename = extract_filename(patch_line, patch_level, "+++ ");
if (!new_filename) {
- bb_error_msg_and_die("invalid patch");
+ bb_simple_error_msg_and_die("invalid patch");
}
/* Get access rights from the file to be patched */
@@ -209,7 +209,7 @@ int patch_main(int argc UNUSED_PARAM, char **argv)
/* src_beg_line will be 0 if it's a new file */
count = src_beg_line - src_cur_line;
if (copy_lines(src_stream, dst_stream, count)) {
- bb_error_msg_and_die("bad src file");
+ bb_simple_error_msg_and_die("bad src file");
}
src_cur_line += count;
dst_cur_line += count;
diff --git a/editors/patch_toybox.c b/editors/patch_toybox.c
index 3ffbf9084..aebab8132 100644
--- a/editors/patch_toybox.c
+++ b/editors/patch_toybox.c
@@ -200,7 +200,7 @@ int copy_tempfile(int fdin, char *name, char **tempname)
*tempname = xasprintf("%sXXXXXX", name);
fd = mkstemp(*tempname);
- if(-1 == fd) bb_perror_msg_and_die("no temp file");
+ if(-1 == fd) bb_simple_perror_msg_and_die("no temp file");
// Set permissions of output file
fstat(fdin, &statbuf);
diff --git a/editors/sed.c b/editors/sed.c
index 57d3dda16..d3444003e 100644
--- a/editors/sed.c
+++ b/editors/sed.c
@@ -315,7 +315,7 @@ static int parse_regex_delim(const char *cmdstr, char **match, char **replace)
/* verify that the 's' or 'y' is followed by something. That something
* (typically a 'slash') is now our regexp delimiter... */
if (*cmdstr == '\0')
- bb_error_msg_and_die("bad format in substitution expression");
+ bb_simple_error_msg_and_die("bad format in substitution expression");
delimiter = *cmdstr_ptr++;
/* save the match string */
@@ -360,7 +360,7 @@ static int get_address(const char *my_str, int *linenum, regex_t ** regex)
} else {
*regex = G.previous_regex_ptr;
if (!G.previous_regex_ptr)
- bb_error_msg_and_die("no previous regexp");
+ bb_simple_error_msg_and_die("no previous regexp");
}
/* Move position to next character after last delimiter */
pos += (next+1);
@@ -378,7 +378,7 @@ static int parse_file_cmd(/*sed_cmd_t *sed_cmd,*/ const char *filecmdstr, char *
start = skip_whitespace(filecmdstr);
eol = strchrnul(start, '\n');
if (eol == start)
- bb_error_msg_and_die("empty filename");
+ bb_simple_error_msg_and_die("empty filename");
if (*eol) {
/* If lines glued together, put backslash back. */
@@ -468,7 +468,7 @@ static int parse_subst_cmd(sed_cmd_t *sed_cmd, const char *substr)
goto out;
default:
dbg("s bad flags:'%s'", substr + idx);
- bb_error_msg_and_die("bad option in substitution expression");
+ bb_simple_error_msg_and_die("bad option in substitution expression");
}
}
out:
@@ -688,7 +688,7 @@ static void add_cmd(const char *cmdstr)
idx--; /* if 0, trigger error check below */
}
if (idx < 0)
- bb_error_msg_and_die("no address after comma");
+ bb_simple_error_msg_and_die("no address after comma");
sed_cmd->end_line_orig = sed_cmd->end_line;
}
@@ -706,7 +706,7 @@ static void add_cmd(const char *cmdstr)
/* last part (mandatory) will be a command */
if (!*cmdstr)
- bb_error_msg_and_die("missing command");
+ bb_simple_error_msg_and_die("missing command");
sed_cmd->cmd = *cmdstr++;
cmdstr = parse_cmd_args(sed_cmd, cmdstr);
@@ -791,7 +791,7 @@ static int do_subst_command(sed_cmd_t *sed_cmd, char **line_p)
if (!current_regex) {
current_regex = G.previous_regex_ptr;
if (!current_regex)
- bb_error_msg_and_die("no previous regexp");
+ bb_simple_error_msg_and_die("no previous regexp");
}
G.previous_regex_ptr = current_regex;
@@ -962,7 +962,7 @@ static void puts_maybe_newline(char *s, FILE *file, char *last_puts_char, char l
if (ferror(file)) {
xfunc_error_retval = 4; /* It's what gnu sed exits with... */
- bb_error_msg_and_die(bb_msg_write_error);
+ bb_simple_error_msg_and_die(bb_msg_write_error);
}
*last_puts_char = lpc;
}
@@ -1192,7 +1192,7 @@ static void process_files(void)
}
sed_cmd = sed_cmd->next;
if (!sed_cmd)
- bb_error_msg_and_die("unterminated {");
+ bb_simple_error_msg_and_die("unterminated {");
}
}
continue;
diff --git a/editors/vi.c b/editors/vi.c
index 0ea547a75..f8fab7028 100644
--- a/editors/vi.c
+++ b/editors/vi.c
@@ -1042,7 +1042,7 @@ static int readit(void) // read (maybe cursor) key from stdin
goto again;
go_bottom_and_clear_to_eol();
cookmode(); // terminal to "cooked"
- bb_error_msg_and_die("can't read user input");
+ bb_simple_error_msg_and_die("can't read user input");
}
return c;
}