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16c7eb4135
On systems that support both C compiling and dynamic loading, we can speed up `realpath()` (where most time in rbenv is spent) by replacing it with a dynamically loaded bash builtin. When `make -C src` is called in the project's root, `libexec/rbenv-realpath.dylib` will be created. If it exists, rbenv will attempt to load it as a builtin command. If it fails, execution will fall back to the old `realpath()` shell function.
43 lines
832 B
C
43 lines
832 B
C
#include "bash.h"
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#include <stdlib.h>
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#include <stdio.h>
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int realpath_builtin(list)
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WORD_LIST *list;
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{
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int es;
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char *realbuf, *p;
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if (list == 0) {
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// builtin_usage();
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return (EX_USAGE);
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}
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for (es = EXECUTION_SUCCESS; list; list = list->next) {
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p = list->word->word;
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realbuf = realpath(p, NULL);
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if (realbuf == NULL) {
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es = EXECUTION_FAILURE;
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// builtin_error("%s: cannot resolve: %s", p, strerror(errno));
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} else {
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printf("%s\n", realbuf);
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free(realbuf);
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}
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}
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return es;
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}
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char *realpath_doc[] = {
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"Display each PATHNAME argument, resolving symbolic links. The exit status",
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"is 0 if each PATHNAME was resolved; non-zero otherwise.",
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(char *)NULL
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};
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struct builtin realpath_struct = {
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"realpath",
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realpath_builtin,
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BUILTIN_ENABLED,
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realpath_doc,
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"realpath pathname [pathname...]",
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0
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};
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