1*699cd480SApple OSS Distributions #ifndef MEMORYSTATUS_ASSERTION_HELPERS_H 2*699cd480SApple OSS Distributions #define MEMORYSTATUS_ASSERTION_HELPERS_H 3*699cd480SApple OSS Distributions 4*699cd480SApple OSS Distributions #include <stdlib.h> 5*699cd480SApple OSS Distributions #include <stdint.h> 6*699cd480SApple OSS Distributions 7*699cd480SApple OSS Distributions #define ASSERTION_STATE_IS_SET true 8*699cd480SApple OSS Distributions #define ASSERTION_STATE_IS_RELINQUISHED false 9*699cd480SApple OSS Distributions 10*699cd480SApple OSS Distributions /* Helper functions for setting and checking memorystatus assertions 11*699cd480SApple OSS Distributions * on processes. 12*699cd480SApple OSS Distributions */ 13*699cd480SApple OSS Distributions 14*699cd480SApple OSS Distributions /* 15*699cd480SApple OSS Distributions * Set the jetsam priority and user data for a process. 16*699cd480SApple OSS Distributions * 17*699cd480SApple OSS Distributions * If this request is assertion driven, the kernel will 18*699cd480SApple OSS Distributions * set the process's assertion priority. 19*699cd480SApple OSS Distributions * 20*699cd480SApple OSS Distributions * If this request is not assertion driven, the kernel 21*699cd480SApple OSS Distributions * will set the process's requested priority. 22*699cd480SApple OSS Distributions * 23*699cd480SApple OSS Distributions * The kernel will then apply policy and move the process 24*699cd480SApple OSS Distributions * to the appropriate jetsam priority. 25*699cd480SApple OSS Distributions * 26*699cd480SApple OSS Distributions * Returns: 0 on success 27*699cd480SApple OSS Distributions * non-0 on failure 28*699cd480SApple OSS Distributions */ 29*699cd480SApple OSS Distributions int 30*699cd480SApple OSS Distributions set_priority(pid_t pid, int32_t priority, uint64_t user_data, boolean_t is_assertion_driven); 31*699cd480SApple OSS Distributions 32*699cd480SApple OSS Distributions /* 33*699cd480SApple OSS Distributions * Return: true on success 34*699cd480SApple OSS Distributions * false on failure --> this asserts a failure and quits test 35*699cd480SApple OSS Distributions */ 36*699cd480SApple OSS Distributions boolean_t 37*699cd480SApple OSS Distributions check_properties(pid_t pid, int32_t expected_priority, int32_t expected_limit_mb, uint64_t expected_user_data, boolean_t expected_assertion_state, const char *test); 38*699cd480SApple OSS Distributions 39*699cd480SApple OSS Distributions /* 40*699cd480SApple OSS Distributions * Set the active and inactive memlimits for a process. 41*699cd480SApple OSS Distributions * Set the fatalness for each limit. 42*699cd480SApple OSS Distributions * 43*699cd480SApple OSS Distributions * Returns: 0 on success 44*699cd480SApple OSS Distributions * non-zero on failure 45*699cd480SApple OSS Distributions */ 46*699cd480SApple OSS Distributions int 47*699cd480SApple OSS Distributions set_memlimits( 48*699cd480SApple OSS Distributions pid_t pid, 49*699cd480SApple OSS Distributions int32_t active_limit_mb, int32_t inactive_limit_mb, 50*699cd480SApple OSS Distributions boolean_t active_is_fatal, boolean_t inactive_is_fatal); 51*699cd480SApple OSS Distributions 52*699cd480SApple OSS Distributions /* 53*699cd480SApple OSS Distributions * Returns: 0 on success 54*699cd480SApple OSS Distributions * non-0 on failure 55*699cd480SApple OSS Distributions */ 56*699cd480SApple OSS Distributions int 57*699cd480SApple OSS Distributions set_assertion_priority(pid_t pid, int32_t priority, uint64_t user_data); 58*699cd480SApple OSS Distributions 59*699cd480SApple OSS Distributions /* 60*699cd480SApple OSS Distributions * Returns: 0 on success 61*699cd480SApple OSS Distributions * non-0 on failure 62*699cd480SApple OSS Distributions */ 63*699cd480SApple OSS Distributions int 64*699cd480SApple OSS Distributions relinquish_assertion_priority(pid_t pid, uint64_t user_data); 65*699cd480SApple OSS Distributions 66*699cd480SApple OSS Distributions /* 67*699cd480SApple OSS Distributions * Get the priority properties for a single process. 68*699cd480SApple OSS Distributions * 69*699cd480SApple OSS Distributions * This returns the process's effective jetsam priority, jetsam limit, 70*699cd480SApple OSS Distributions * user_data (not kernel related), and proc's kernel state. 71*699cd480SApple OSS Distributions * If this call fails, there is no reason to continue the test. 72*699cd480SApple OSS Distributions * 73*699cd480SApple OSS Distributions * Return: true on success 74*699cd480SApple OSS Distributions * false on failure --> this asserts fail and test quits 75*699cd480SApple OSS Distributions */ 76*699cd480SApple OSS Distributions boolean_t 77*699cd480SApple OSS Distributions get_priority_props(pid_t pid, boolean_t verbose, int32_t *priority, int32_t *limit_mb, uint64_t *user_data, uint32_t *state); 78*699cd480SApple OSS Distributions 79*699cd480SApple OSS Distributions /* 80*699cd480SApple OSS Distributions * Input: 81*699cd480SApple OSS Distributions * state: kernel state bits from the get_priority_props() call 82*699cd480SApple OSS Distributions * expected_assertion_state: 83*699cd480SApple OSS Distributions * true if process should be holding an assertion state. 84*699cd480SApple OSS Distributions * false if no assertion state is held (eg: relinquished). 85*699cd480SApple OSS Distributions * 86*699cd480SApple OSS Distributions * Return true: verification passed 87*699cd480SApple OSS Distributions * false: verification failed 88*699cd480SApple OSS Distributions */ 89*699cd480SApple OSS Distributions boolean_t 90*699cd480SApple OSS Distributions verify_assertion_state(uint32_t state, boolean_t expected_assertion_state); 91*699cd480SApple OSS Distributions 92*699cd480SApple OSS Distributions #endif /* MEMORYSTATUS_ASSERTION_HELPERS_H */ 93