#include "intel_rdt.c" /* sic */
#include "testing.h"
-#include <sys/stat.h>
/***************************************************************************
* PQOS mocks
int pqos_cap_get(const struct pqos_cap **cap, const struct pqos_cpuinfo **cpu) {
return 0;
}
+
/***************************************************************************
* helper functions
*/
-
-/*
- * NAME
- * pids_list_get_element
- *
- * DESCRIPTION
- * Gets list element at index position. Assumes list was created by
- * pids_list_add_pid function.
- *
- * PARAMETERS
- * `list' Pids list
- * `index' Position of desired element relative to given list pointer.
- *
- * RETURN VALUE
- * Pointer to element at index position.
- * NULL if index exceeds list's length.
- */
-pids_list_t *pids_list_get_element(pids_list_t *list, const size_t index) {
- assert(list);
- size_t current = 0;
- while (list != NULL && current != index) {
- list = list->next;
- current++;
- }
- return list;
-}
-
-typedef struct stub_proc_pid {
- proc_comm_t comm;
- pid_t pid;
-} stub_proc_pid_t;
-
-static const char *proc_fs = "/tmp/procfs_stub";
-
-/*
- * NAME
- * stub_procfs_setup
- *
- * DESCRIPTION
- * Prepares testing environment by creating temporary
- * PID/comm file structure.
- *
- * PARAMETERS
- * `proc_pids_array' Array of stub_proc_pid_t structs. Represents
- * which PIDs should hold given process name.
- * `proc_pids_array_length' Element count of input array.
- *
- * RETURN VALUE
- * 0 on success.
- * -1 on base dir creation error.
- * -2 on comm file creation error.
- */
-int stub_procfs_setup(const stub_proc_pid_t *proc_pids_array,
- const size_t proc_pids_array_length) {
- if (mkdir(proc_fs, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH) != 0)
- return -1;
- char path[256];
-
- for (size_t i = 0; i < proc_pids_array_length; ++i) {
- memset(path, 0, sizeof(path));
- snprintf(path, STATIC_ARRAY_SIZE(path), "%s/%d", proc_fs,
- proc_pids_array[i].pid);
- mkdir(path, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
- strncat(path, "/comm", STATIC_ARRAY_SIZE(path) - strlen(path) - 1);
-
- FILE *fp = fopen(path, "w");
- if (!fp)
- return -2;
- fwrite(proc_pids_array[i].comm, sizeof(char),
- strlen(proc_pids_array[i].comm), fp);
- fclose(fp);
- }
- return 0;
-}
-
-/*
- * NAME
- * stub_procfs_teardown
- *
- * DESCRIPTION
- * Clears testing environment: removes stub proc files.
- * NOTE - This function could be implemented by usage of nftw, but this
- * would require #define _XOPEN_SOURCE 500, which
- * messes up intel_rdt includes.
- *
- * RETURN VALUE
- * system command result
- */
-int stub_procfs_teardown() {
- char cmd[256];
- sstrncpy(cmd, "rm -rf ", STATIC_ARRAY_SIZE(cmd));
- strncat(cmd, proc_fs, STATIC_ARRAY_SIZE(cmd) - strlen(cmd) - 1);
- return system(cmd);
-}
-
-/* Max PID value. More info:
- * http://web.archive.org/web/20111209081734/http://research.cs.wisc.edu/condor/condorg/linux_scalability.html
- */
-#define MAX_PID 4194304
-#define MAX_PID_STR "4194304"
-
rdt_ctx_t *stub_rdt_setup() {
rdt_ctx_t *rdt = calloc(1, sizeof(*rdt));
/***************************************************************************
* tests
*/
-DEF_TEST(initialize_proc_pids__on_nullptr) {
- /* setup */
- const char *procs_names_array[] = {"proc1", "proc2", "proc3"};
- const size_t procs_names_array_size = STATIC_ARRAY_SIZE(procs_names_array);
- proc_pids_t *proc_pids_array = NULL;
-
- /* check */
- int result = initialize_proc_pids(procs_names_array, procs_names_array_size,
- &proc_pids_array);
- EXPECT_EQ_INT(0, result);
- for (size_t i = 0; i < procs_names_array_size; ++i)
- EXPECT_EQ_STR(procs_names_array[i], proc_pids_array[i].proccess_name);
-
- /* cleanup */
- free(proc_pids_array);
- return 0;
-}
-
-DEF_TEST(add_proc_pid__empty_list) {
- /* setup */
- proc_pids_t proc_pids_instance;
- proc_pids_instance.pids = NULL;
- pid_t pid = 1234;
-
- /* check */
- pids_list_add_pid(&proc_pids_instance.pids, pid);
- pids_list_t *added = pids_list_get_element(proc_pids_instance.pids, 0);
- EXPECT_EQ_INT(pid, added->pid);
-
- /* cleanup */
- pids_list_free(proc_pids_instance.pids);
- return 0;
-}
-
-DEF_TEST(add_proc_pid__non_empty_list) {
- /* setup */
- proc_pids_t proc_pids_instance;
- proc_pids_instance.pids = NULL;
- pid_t pids[] = {1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007};
-
- /* check */
- for (size_t i = 0; i < STATIC_ARRAY_SIZE(pids); ++i)
- pids_list_add_pid(&proc_pids_instance.pids, pids[i]);
-
- for (size_t i = 0; i < STATIC_ARRAY_SIZE(pids); ++i) {
- pids_list_t *added = pids_list_get_element(proc_pids_instance.pids, i);
- EXPECT_EQ_INT(pids[i], added->pid);
- }
-
- /* cleanup */
- pids_list_free(proc_pids_instance.pids);
- return 0;
-}
-
-DEF_TEST(pids_list_to_array__non_empty_list) {
- /* setup */
- pid_t pids[] = {1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007};
- pids_list_t *pids_list = NULL;
- for (size_t i = 0; i < STATIC_ARRAY_SIZE(pids); ++i)
- pids_list_add_pid(&pids_list, pids[i]);
-
- /* check */
- pid_t target_array[STATIC_ARRAY_SIZE(pids)];
- pids_list_to_array(target_array, pids_list, STATIC_ARRAY_SIZE(target_array));
- for (size_t i = 0; i < STATIC_ARRAY_SIZE(pids); ++i)
- EXPECT_EQ_INT(pids[i], target_array[i]);
-
- /* cleanup */
- pids_list_free(pids_list);
- return 0;
-}
-
-DEF_TEST(pids_list_add_pids_list__non_empty_lists) {
- /* setup */
- pid_t pids_array_1[] = {1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007};
- pid_t pids_array_2[] = {2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007};
- pids_list_t *pids_list_1 = NULL;
- pids_list_t *pids_list_2 = NULL;
- size_t increase = 0;
- for (size_t i = 0; i < STATIC_ARRAY_SIZE(pids_array_1); ++i) {
- pids_list_add_pid(&pids_list_1, pids_array_1[i]);
- pids_list_add_pid(&pids_list_2, pids_array_2[i]);
- }
-
- /* check */
- int result = pids_list_add_pids_list(&pids_list_1, pids_list_2, &increase);
- EXPECT_EQ_INT(0, result);
- EXPECT_EQ_INT(STATIC_ARRAY_SIZE(pids_array_2), increase);
-
- for (size_t i = 0; i < STATIC_ARRAY_SIZE(pids_array_1); ++i) {
- EXPECT_EQ_INT(1, pids_list_contains_pid(pids_list_1, pids_array_1[i]));
- EXPECT_EQ_INT(1, pids_list_contains_pid(pids_list_1, pids_array_2[i]));
- }
-
- /* setup */
- pids_list_free(pids_list_1);
- pids_list_free(pids_list_2);
- return 0;
-}
-
-DEF_TEST(pids_list_add_pids_list__add_to_empty) {
- /* setup */
- pid_t pids_array[] = {2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007};
- pids_list_t *pids_list_1 = NULL;
- pids_list_t *pids_list_2 = NULL;
- size_t increase = 0;
- for (size_t i = 0; i < STATIC_ARRAY_SIZE(pids_array); ++i)
- pids_list_add_pid(&pids_list_2, pids_array[i]);
-
- /* check */
- int result = pids_list_add_pids_list(&pids_list_1, pids_list_2, &increase);
- EXPECT_EQ_INT(0, result);
- EXPECT_EQ_INT(STATIC_ARRAY_SIZE(pids_array), increase);
-
- for (size_t i = 0; i < STATIC_ARRAY_SIZE(pids_array); ++i)
- EXPECT_EQ_INT(1, pids_list_contains_pid(pids_list_1, pids_array[i]));
-
- /* setup */
- pids_list_free(pids_list_1);
- pids_list_free(pids_list_2);
- return 0;
-}
-
-DEF_TEST(get_pid_number__valid_dir) {
- /* setup */
- struct dirent d;
- sstrncpy(d.d_name, MAX_PID_STR, STATIC_ARRAY_SIZE(d.d_name));
- d.d_type = DT_DIR;
- pid_t pid = 0;
-
- /* check */
- int pid_conversion = get_pid_number(&d, &pid);
-
- EXPECT_EQ_INT(0, pid_conversion);
- EXPECT_EQ_INT(MAX_PID, pid);
-
- /* cleanup */
- return 0;
-}
-
-DEF_TEST(get_pid_number__invalid_dir_name) {
- /* setup */
- struct dirent d;
- sstrncpy(d.d_name, "invalid", STATIC_ARRAY_SIZE(d.d_name));
- d.d_type = DT_DIR;
- pid_t pid = 0;
-
- /* check */
- int pid_conversion = get_pid_number(&d, &pid);
-
- EXPECT_EQ_INT(-1, pid_conversion);
- EXPECT_EQ_INT(0, pid);
-
- /* cleanup */
- return 0;
-}
-
-DEF_TEST(read_proc_name__valid_name) {
- /* setup */
- stub_proc_pid_t pp_stubs[] = {{"proc1", MAX_PID}};
- stub_procfs_setup(pp_stubs, STATIC_ARRAY_SIZE(pp_stubs));
- struct dirent d;
- sstrncpy(d.d_name, MAX_PID_STR, STATIC_ARRAY_SIZE(d.d_name));
- d.d_type = DT_DIR;
-
- /* check */
- proc_comm_t comm;
- int read_result = read_proc_name(proc_fs, &d, comm, STATIC_ARRAY_SIZE(comm));
-
- EXPECT_EQ_INT(strlen(pp_stubs[0].comm), read_result);
- EXPECT_EQ_STR(pp_stubs[0].comm, comm);
-
- /* cleanup */
- stub_procfs_teardown();
- return 0;
-}
-
-DEF_TEST(read_proc_name__invalid_name) {
- /* setup */
- struct dirent d;
- sstrncpy(d.d_name, MAX_PID_STR, STATIC_ARRAY_SIZE(d.d_name));
- d.d_type = DT_DIR;
-
- /* check */
- proc_comm_t comm;
- int read_result = read_proc_name(proc_fs, &d, comm, STATIC_ARRAY_SIZE(comm));
-
- EXPECT_EQ_INT(-1, read_result);
-
- /* cleanup */
- return 0;
-}
-
-DEF_TEST(fetch_pids_for_procs__one_proc_many_pid) {
- /* setup */
- const char *proc_names[] = {"proc1"};
- stub_proc_pid_t pp_stubs[] = {{"proc1", 1007},
- {"proc1", 1008},
- {"proc1", 1009},
- {"proc2", 1010},
- {"proc3", 1011}};
- stub_procfs_setup(pp_stubs, STATIC_ARRAY_SIZE(pp_stubs));
- proc_pids_t *output = NULL;
-
- /* check */
- int result = fetch_pids_for_procs(proc_fs, proc_names,
- STATIC_ARRAY_SIZE(proc_names), &output);
- EXPECT_EQ_INT(0, result);
-
- /* proc name check */
- EXPECT_EQ_STR(proc_names[0], output[0].proccess_name);
-
- for (size_t i = 0; i < STATIC_ARRAY_SIZE(pp_stubs); ++i) {
- if (0 == strcmp(pp_stubs[i].comm, proc_names[0]))
- /* check if proc struct has correct pids */
- EXPECT_EQ_INT(pids_list_contains_pid(output[0].pids, pp_stubs[i].pid), 1);
- else
- /* check if proc struct has no incorrect pids */
- EXPECT_EQ_INT(pids_list_contains_pid(output[0].pids, pp_stubs[i].pid), 0);
- }
-
- /* cleanup */
- for (size_t i = 0; i < STATIC_ARRAY_SIZE(proc_names); ++i)
- pids_list_free(output[i].pids);
- free(output);
- stub_procfs_teardown();
- return 0;
-}
-
-DEF_TEST(fetch_pids_for_procs__many_proc_many_pid) {
- /* setup */
- const char *proc_names[] = {"proc1", "proc2", "proc3"};
- stub_proc_pid_t pp_stubs[] = {
- {"proc1", 1007}, {"proc1", 1008}, {"proc1", 1009}, {"proc2", 2007},
- {"proc2", 2008}, {"proc2", 2009}, {"proc3", 3007}, {"proc3", 3008},
- {"proc3", 3009}, {"proc4", 4007}, {"proc4", 4008}, {"proc4", 4009},
- {"proc5", 5007}, {"proc5", 5008}, {"proc5", 5009}};
- stub_procfs_setup(pp_stubs, STATIC_ARRAY_SIZE(pp_stubs));
- proc_pids_t *output = NULL;
-
- /* check */
- int result = fetch_pids_for_procs(proc_fs, proc_names,
- STATIC_ARRAY_SIZE(proc_names), &output);
- EXPECT_EQ_INT(0, result);
-
- for (size_t i = 0; i < STATIC_ARRAY_SIZE(proc_names); ++i) {
-
- /* proc name check */
- EXPECT_EQ_STR(proc_names[i], output[i].proccess_name);
-
- for (size_t j = 0; j < STATIC_ARRAY_SIZE(pp_stubs); ++j) {
- if (0 == strcmp(pp_stubs[j].comm, proc_names[i]))
- /* check if proc struct has correct pids */
- EXPECT_EQ_INT(pids_list_contains_pid(output[i].pids, pp_stubs[j].pid),
- 1);
- else
- /* check if proc struct has no incorrect pids */
- EXPECT_EQ_INT(pids_list_contains_pid(output[i].pids, pp_stubs[j].pid),
- 0);
- }
- }
-
- /* cleanup */
- for (size_t i = 0; i < STATIC_ARRAY_SIZE(proc_names); ++i)
- pids_list_free(output[i].pids);
- free(output);
- stub_procfs_teardown();
- return 0;
-}
-
DEF_TEST(rdt_config_ngroups__one_process) {
/* setup */
rdt_ctx_t *rdt = stub_rdt_setup();
return 0;
}
-DEF_TEST(rdt_pid_list_diff__all_changed) {
- /* setup */
- pid_t pids_array_before[] = {1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007};
- pid_t pids_array_after[] = {2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007};
- pids_list_t *pids_list_before = NULL;
- pids_list_t *pids_list_after = NULL;
- for (size_t i = 0; i < STATIC_ARRAY_SIZE(pids_array_after); ++i) {
- pids_list_add_pid(&pids_list_before, pids_array_before[i]);
- pids_list_add_pid(&pids_list_after, pids_array_after[i]);
- }
-
- pids_list_t *new_pids = NULL;
- size_t new_pids_count = 0;
- pids_list_t *lost_pids = NULL;
- size_t lost_pids_count = 0;
-
- /* check */
- int result = rdt_pid_list_diff(pids_list_before, pids_list_after, &new_pids,
- &new_pids_count, &lost_pids, &lost_pids_count);
- EXPECT_EQ_INT(0, result);
- EXPECT_EQ_INT(STATIC_ARRAY_SIZE(pids_array_before), lost_pids_count);
- EXPECT_EQ_INT(STATIC_ARRAY_SIZE(pids_array_after), new_pids_count);
-
- for (size_t i = 0; i < STATIC_ARRAY_SIZE(pids_array_before); ++i) {
- EXPECT_EQ_INT(1, pids_list_contains_pid(new_pids, pids_array_after[i]));
- EXPECT_EQ_INT(1, pids_list_contains_pid(lost_pids, pids_array_before[i]));
- }
-
- /* cleanup */
- pids_list_free(pids_list_before);
- pids_list_free(pids_list_after);
- pids_list_free(new_pids);
- pids_list_free(lost_pids);
-
- return 0;
-}
-
-DEF_TEST(rdt_pid_list_diff__nothing_changed) {
- /* setup */
- pid_t pids_array_before[] = {1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007};
- pids_list_t *pids_list_before = NULL;
- for (size_t i = 0; i < STATIC_ARRAY_SIZE(pids_array_before); ++i) {
- pids_list_add_pid(&pids_list_before, pids_array_before[i]);
- }
-
- pids_list_t *new_pids = NULL;
- size_t new_pids_count = 0;
- pids_list_t *lost_pids = NULL;
- size_t lost_pids_count = 0;
-
- /* check */
- int result = rdt_pid_list_diff(pids_list_before, pids_list_before, &new_pids,
- &new_pids_count, &lost_pids, &lost_pids_count);
- EXPECT_EQ_INT(0, result);
- EXPECT_EQ_INT(0, lost_pids_count);
- EXPECT_EQ_INT(0, new_pids_count);
- OK(NULL == new_pids);
- OK(NULL == lost_pids);
-
- /* cleanup */
- pids_list_free(pids_list_before);
-
- return 0;
-}
-
-DEF_TEST(rdt_pid_list_diff__one_added) {
- /* setup */
- pid_t pids_array_before[] = {1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007};
- pid_t pids_array_after[] = {1000, 1001, 1002, 1003, 1004,
- 1005, 1006, 1007, 1008};
- pids_list_t *pids_list_before = NULL;
- pids_list_t *pids_list_after = NULL;
- for (size_t i = 0; i < STATIC_ARRAY_SIZE(pids_array_before); ++i)
- pids_list_add_pid(&pids_list_before, pids_array_before[i]);
-
- for (size_t i = 0; i < STATIC_ARRAY_SIZE(pids_array_after); ++i)
- pids_list_add_pid(&pids_list_after, pids_array_after[i]);
-
- pids_list_t *new_pids = NULL;
- size_t new_pids_count = 0;
- pids_list_t *lost_pids = NULL;
- size_t lost_pids_count = 0;
-
- /* check */
- int result = rdt_pid_list_diff(pids_list_before, pids_list_after, &new_pids,
- &new_pids_count, &lost_pids, &lost_pids_count);
- EXPECT_EQ_INT(0, result);
- EXPECT_EQ_INT(0, lost_pids_count);
- EXPECT_EQ_INT(1, new_pids_count);
- EXPECT_EQ_INT(1008, new_pids->pid);
-
- /* cleanup */
- pids_list_free(pids_list_before);
- pids_list_free(pids_list_after);
- pids_list_free(new_pids);
-
- return 0;
-}
-
-DEF_TEST(rdt_pid_list_diff__one_removed) {
- /* setup */
- pid_t pids_array_before[] = {1000, 1001, 1002, 1003, 1004,
- 1005, 1006, 1007, 1008};
- pid_t pids_array_after[] = {1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007};
- pids_list_t *pids_list_before = NULL;
- pids_list_t *pids_list_after = NULL;
- for (size_t i = 0; i < STATIC_ARRAY_SIZE(pids_array_before); ++i)
- pids_list_add_pid(&pids_list_before, pids_array_before[i]);
-
- for (size_t i = 0; i < STATIC_ARRAY_SIZE(pids_array_after); ++i)
- pids_list_add_pid(&pids_list_after, pids_array_after[i]);
-
- pids_list_t *new_pids = NULL;
- size_t new_pids_count = 0;
- pids_list_t *lost_pids = NULL;
- size_t lost_pids_count = 0;
-
- /* check */
- int result = rdt_pid_list_diff(pids_list_before, pids_list_after, &new_pids,
- &new_pids_count, &lost_pids, &lost_pids_count);
- EXPECT_EQ_INT(0, result);
- EXPECT_EQ_INT(1, lost_pids_count);
- EXPECT_EQ_INT(0, new_pids_count);
- EXPECT_EQ_INT(1008, lost_pids->pid);
-
- /* cleanup */
- pids_list_free(pids_list_before);
- pids_list_free(pids_list_after);
- pids_list_free(lost_pids);
-
- return 0;
-}
-
int main(void) {
- stub_procfs_teardown();
- RUN_TEST(initialize_proc_pids__on_nullptr);
- RUN_TEST(add_proc_pid__empty_list);
- RUN_TEST(add_proc_pid__non_empty_list);
- RUN_TEST(pids_list_to_array__non_empty_list);
- RUN_TEST(pids_list_add_pids_list__non_empty_lists);
- RUN_TEST(pids_list_add_pids_list__add_to_empty);
- RUN_TEST(get_pid_number__valid_dir);
- RUN_TEST(get_pid_number__invalid_dir_name);
- RUN_TEST(read_proc_name__valid_name);
- RUN_TEST(read_proc_name__invalid_name);
- RUN_TEST(fetch_pids_for_procs__one_proc_many_pid);
- RUN_TEST(fetch_pids_for_procs__many_proc_many_pid);
RUN_TEST(rdt_config_ngroups__one_process);
RUN_TEST(rdt_config_ngroups__two_groups);
RUN_TEST(rdt_config_ngroups__too_long_proc_name);
RUN_TEST(rdt_config_ngroups__duplicate_proc_name_in_group);
RUN_TEST(rdt_config_ngroups__empty_group);
RUN_TEST(rdt_config_ngroups__empty_proc_name);
- RUN_TEST(rdt_pid_list_diff__all_changed);
- RUN_TEST(rdt_pid_list_diff__nothing_changed);
- RUN_TEST(rdt_pid_list_diff__one_added);
- RUN_TEST(rdt_pid_list_diff__one_removed);
- stub_procfs_teardown();
END_TEST;
}