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lmkd: Use std::array<> and remove the ARRAY_SIZE() definition 

Using ARRAY_SIZE() on a pointer yields 1 while applying .size() to a
pointer triggers a compiler error. Hence use .size() instead of
ARRAY_SIZE().

Bug: 213617178
Test: Compile-tested only.
Change-Id: Ie0f9740f59470c943f8d62b9475f7f987ed8707b
Signed-off-by: Bart Van Assche <bvanassche@google.com>
This commit is contained in:
Bart Van Assche 2022-02-02 23:57:01 +00:00
parent 80a3dba57a
commit 545067957c
1 changed files with 7 additions and 5 deletions
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12
lmkd.cpp
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@ -35,6 +35,7 @@
#include <unistd.h>
#include <algorithm>
#include <array>
#include <shared_mutex>
#include <cutils/properties.h>
@ -104,7 +105,6 @@ static inline void trace_kill_end() {}
#define INKERNEL_MINFREE_PATH "/sys/module/lowmemorykiller/parameters/minfree"
#define INKERNEL_ADJ_PATH "/sys/module/lowmemorykiller/parameters/adj"
#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x)))
#define EIGHT_MEGA (1 << 23)
#define TARGET_UPDATE_MIN_INTERVAL_MS 1000
@ -287,8 +287,8 @@ static int maxevents;
#define OOM_SCORE_ADJ_MIN (-1000)
#define OOM_SCORE_ADJ_MAX 1000
static int lowmem_adj[MAX_TARGETS];
static int lowmem_minfree[MAX_TARGETS];
static std::array<int, MAX_TARGETS> lowmem_adj;
static std::array<int, MAX_TARGETS> lowmem_minfree;
static int lowmem_targets_size;
/* Fields to parse in /proc/zoneinfo */
@ -1376,8 +1376,9 @@ static void cmd_target(int ntargets, LMKD_CTRL_PACKET packet) {
static struct timespec last_req_tm;
struct timespec curr_tm;
if (ntargets < 1 || ntargets > (int)ARRAY_SIZE(lowmem_adj))
if (ntargets < 1 || ntargets > (int)lowmem_adj.size()) {
return;
}
/*
* Ratelimit minfree updates to once per TARGET_UPDATE_MIN_INTERVAL_MS
@ -1469,8 +1470,9 @@ static void ctrl_command_handler(int dsock_idx) {
switch(cmd) {
case LMK_TARGET:
targets = nargs / 2;
if (nargs & 0x1 || targets > (int)ARRAY_SIZE(lowmem_adj))
if (nargs & 0x1 || targets > (int)lowmem_adj.size()) {
goto wronglen;
}
cmd_target(targets, packet);
break;
case LMK_PROCPRIO: