upstream/mercurial-mirror Files · contrib/hgsh/Makefile

rust: Preallocate the returned `Vec` in `utils::files::relativize_path`...

rust: Preallocate the returned `Vec` in `utils::files::relativize_path` Profiling `rhg files > /dev/null` on an old snapshot of mozilla-central (with `perf` and the Firefox Profiler: https://github.com/firefox-devtools/profiler/blob/main/docs-user/guide-perf-profiling.md) showed non-trivial time spend in this function and in `realloc`. This change makes the wall-clock time for that process on my machine go from ~190 ms to ~150 ms. Differential Revision: https://phab.mercurial-scm.org/D10199

Vadim Gelfer - - Load All Authors

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      CC := gcc

      CFLAGS := -g -O2 -Wall -Werror

      prefix ?= /usr/bin

      hgsh: hgsh.o

      	$(CC) -o $@ $<

      install: hgsh

      	install -m755 hgsh $(prefix)

      clean:

      	rm -f *.o hgsh

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				CC := gcc
				CFLAGS := -g -O2 -Wall -Werror

				prefix ?= /usr/bin

				hgsh: hgsh.o
				$(CC) -o $@ $<

				install: hgsh
				install -m755 hgsh $(prefix)

				clean:
				rm -f *.o hgsh