From 344ce4277885e448912fdfc35bcfaf130c74d086 Mon Sep 17 00:00:00 2001 From: Florin Coras Date: Fri, 3 May 2019 11:46:55 -0700 Subject: session/svm: apis for fifo shrinking Change-Id: Ie519683bb90aae6fb95f2a09e251cded1890ed41 Signed-off-by: Florin Coras --- src/plugins/unittest/svm_fifo_test.c | 75 ++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) (limited to 'src/plugins/unittest/svm_fifo_test.c') diff --git a/src/plugins/unittest/svm_fifo_test.c b/src/plugins/unittest/svm_fifo_test.c index 7d83b105c93..8067c6b6b1b 100644 --- a/src/plugins/unittest/svm_fifo_test.c +++ b/src/plugins/unittest/svm_fifo_test.c @@ -2020,6 +2020,74 @@ sfifo_test_fifo_segment_fifo_grow (int verbose) return 0; } +static int +sfifo_test_fifo_segment_fifo_shrink (int verbose) +{ + fifo_segment_main_t *sm = &segment_main; + fifo_segment_create_args_t _a, *a = &_a; + int i, rv, chunk_size = 4096, n_chunks; + fifo_segment_t *fs; + svm_fifo_t *f; + + clib_memset (a, 0, sizeof (*a)); + a->segment_name = "fifo-test1"; + a->segment_size = 256 << 10; + + rv = fifo_segment_create (sm, a); + + SFIFO_TEST (!rv, "svm_fifo_segment_create returned %d", rv); + + /* + * Alloc and grow fifo + */ + fs = fifo_segment_get_segment (sm, a->new_segment_indices[0]); + f = fifo_segment_alloc_fifo (fs, chunk_size, FIFO_SEGMENT_RX_FIFO); + + SFIFO_TEST (f != 0, "svm_fifo_segment_alloc_fifo"); + + for (i = 0; i < 9; i++) + { + fifo_segment_grow_fifo (fs, f, chunk_size); + if (f->size != (i + 2) * chunk_size) + SFIFO_TEST (0, "fifo size should be %u is %u", + (i + 2) * chunk_size, f->size); + } + + rv = svm_fifo_reduce_size (f, 3.5 * chunk_size, 1 /* is producer */ ); + SFIFO_TEST (rv == 3 * chunk_size, "len expected %u is %u", 3 * chunk_size, + rv); + + n_chunks = fifo_segment_num_free_chunks (fs, chunk_size); + SFIFO_TEST (n_chunks == 0, "free chunks should be %u is %u", 0, n_chunks); + + fifo_segment_collect_fifo_chunks (fs, f); + + n_chunks = fifo_segment_num_free_chunks (fs, chunk_size); + SFIFO_TEST (n_chunks == 3, "free chunks should be %u is %u", 3, n_chunks); + + rv = svm_fifo_reduce_size (f, 7 * chunk_size - 1, 1 /* is producer */ ); + SFIFO_TEST (rv == 6 * chunk_size, "len expected %u is %u", 6 * chunk_size, + rv); + + fifo_segment_collect_fifo_chunks (fs, f); + + n_chunks = fifo_segment_num_free_chunks (fs, chunk_size); + SFIFO_TEST (n_chunks == 9, "free chunks should be %u is %u", 9, n_chunks); + /* + * Free + */ + fifo_segment_free_fifo (fs, f); + n_chunks = fifo_segment_num_free_chunks (fs, ~0); + SFIFO_TEST (n_chunks == 9, "free chunks should be %u is %u", 9, n_chunks); + + /* + * Cleanup + */ + fifo_segment_delete (sm, fs); + vec_free (a->new_segment_indices); + return 0; +} + static int sfifo_test_fifo_segment_slave (int verbose) { @@ -2219,6 +2287,11 @@ sfifo_test_fifo_segment (vlib_main_t * vm, unformat_input_t * input) if ((rv = sfifo_test_fifo_segment_fifo_grow (verbose))) return -1; } + else if (unformat (input, "shrink fifo")) + { + if ((rv = sfifo_test_fifo_segment_fifo_shrink (verbose))) + return -1; + } else if (unformat (input, "all")) { if ((rv = sfifo_test_fifo_segment_hello_world (verbose))) @@ -2227,6 +2300,8 @@ sfifo_test_fifo_segment (vlib_main_t * vm, unformat_input_t * input) return -1; if ((rv = sfifo_test_fifo_segment_fifo_grow (verbose))) return -1; + if ((rv = sfifo_test_fifo_segment_fifo_shrink (verbose))) + return -1; /* Pretty slow so avoid running it always if ((rv = sfifo_test_fifo_segment_master_slave (verbose))) return -1; -- cgit 1.2.3-korg