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Restore sprintbuf(), add macro for string literals

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Hawciz pointed out that the previous commit modifies the public
interface of printbuf. Per his suggestion, sprintbuf() was restored
and a new pair of macros was added that wraps printbuf_memappend().

Using a wrapper macro instead of modifying sprintbuf() also reduces
function call overhead, bringing total performance gains to
approximately 400%.
This commit is contained in:
Quentin Young
2017-02-03 21:43:59 +00:00
parent 9ff0f4987f
commit f6f852fd93
5 changed files with 157 additions and 43 deletions
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11
tests/test_printbuf.expected
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@@ -18,5 +18,16 @@ Partial append: 3, [blu]
With embedded \0 character: 4, [ab]
Append to just before resize: 31, [XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX]
Append to just after resize: 32, [XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX]
Buffer size after printbuf_strappend(): 16, [XXXXXXXXXXXXXXXX]
test_printbuf_memappend: end test
========================================
test_sprintbuf: starting test
Buffer length: 0
sprintbuf to just after resize(31+1): 32, [XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX], strlen(buf)=32
5, [plain]
6, [plain1]
16, [plain12147483647]
27, [plain12147483647-2147483648]
29, [plain12147483647-2147483648%s]
test_sprintbuf: end test
========================================