Android LowMemoryKiller原理分析（下）

正文

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struct task_struct * tsk ;

struct task_struct * selected = NULL ;

unsigned long rem = 0 ;

int tasksize ;

int i ;

short min_score_adj = OOM_SCORE_ADJ_MAX + 1 ;

int minfree = 0 ;

int selected_tasksize = 0 ;

short selected_oom_score_adj ;

int array_size = ARRAY_SIZE ( lowmem_adj );

//获取当前剩余内存大小

int other_free = global_page_state ( NR_FREE_PAGES ) - totalreserve_pages ;

int other_file = global_page_state ( NR_FILE_PAGES ) -

global_page_state ( NR_SHMEM ) -

total_swapcache_pages ();

//获取数组大小

if ( lowmem_adj_size array_size )

array_size = lowmem_adj_size ;

if ( lowmem_minfree_size array_size )

array_size = lowmem_minfree_size ;

//遍历lowmem_minfree数组找出相应的最小adj值

for ( i = 0 ; i array_size ; i ++ ) {

minfree = lowmem_minfree [ i ];

if ( other_free minfree

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