fsmonitor: convert shown khash to strset in do_handle_client
Replace the khash-based string set used for deduplicating pathnames in do_handle_client() with a strset, which provides a cleaner interface for the same purpose. Since the paths are interned strings from the batch data, use strdup_strings=0 to avoid unnecessary copies. Suggested-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Paul Tarjan <github@paulisageek.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Paul Tarjan committed
Apr 15, 2026 at 13:27 UTC
b1cebd7194299ad5414ab2122b2970b339399446
1 file changed
+6
-11
builtin/fsmonitor--daemon.c
+6
-11
@@ -16,7 +16,7 @@
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#include "fsmonitor--daemon.h"
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#include "simple-ipc.h"
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-#include "khash.h"
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+#include "strmap.h"
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#include "run-command.h"
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#include "trace.h"
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#include "trace2.h"
@@ -674,8 +674,6 @@ static int fsmonitor_parse_client_token(const char *buf_token,
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return 0;
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}
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-KHASH_INIT(str, const char *, int, 0, kh_str_hash_func, kh_str_hash_equal)
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-
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static int do_handle_client(struct fsmonitor_daemon_state *state,
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const char *command,
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ipc_server_reply_cb *reply,
@@ -692,8 +690,7 @@ static int do_handle_client(struct fsmonitor_daemon_state *state,
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const struct fsmonitor_batch *batch;
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struct fsmonitor_batch *remainder = NULL;
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intmax_t count = 0, duplicates = 0;
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- kh_str_t *shown = NULL;
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- int hash_ret;
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+ struct strset shown = STRSET_INIT;
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int do_trivial = 0;
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int do_flush = 0;
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int do_cookie = 0;
@@ -882,14 +879,14 @@ static int do_handle_client(struct fsmonitor_daemon_state *state,
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* so walk the batch list backwards from the current head back
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* to the batch (sequence number) they named.
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*
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- * We use khash to de-dup the list of pathnames.
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+ * We use a strset to de-dup the list of pathnames.
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*
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* NEEDSWORK: each batch contains a list of interned strings,
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* so we only need to do pointer comparisons here to build the
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* hash table. Currently, we're still comparing the string
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* values.
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*/
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- shown = kh_init_str();
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+ strset_init_with_options(&shown, NULL, 0);
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for (batch = batch_head;
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batch && batch->batch_seq_nr > requested_oldest_seq_nr;
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batch = batch->next) {
@@ -899,11 +896,9 @@ static int do_handle_client(struct fsmonitor_daemon_state *state,
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const char *s = batch->interned_paths[k];
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size_t s_len;
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- if (kh_get_str(shown, s) != kh_end(shown))
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+ if (!strset_add(&shown, s))
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duplicates++;
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else {
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- kh_put_str(shown, s, &hash_ret);
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-
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trace_printf_key(&trace_fsmonitor,
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"send[%"PRIuMAX"]: %s",
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count, s);
@@ -973,7 +968,7 @@ static int do_handle_client(struct fsmonitor_daemon_state *state,
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trace2_data_intmax("fsmonitor", the_repository, "response/count/duplicates", duplicates);
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cleanup:
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- kh_destroy_str(shown);
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+ strset_clear(&shown);
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strbuf_release(&response_token);
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strbuf_release(&requested_token_id);
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strbuf_release(&payload);