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library: more tweaks for code and/or comments, 3rd gen

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Following is a summary of significant changes (if any)
to each of these now upgraded 3rd gen library modules.

<meminfo> ............................................
. eliminated duplicate decl of 'struct procps_meminfo'
. standardized/normalized results struct union members
. added 'std' & 'var' dividers in .c file, like <pids>
. how did i miss relocating all these friggin' #undefs
. cleanup 'get' return logic (remove a redundant 'if')

<pids> ...............................................
. repositioned the procps_pidsinfo structure in header
. removed the extra trailing comma from enum pids_item
. standardized/normalized results struct union members

<slabinfo> ...........................................
. corrected comment typo (jeeze, in an 'aligned' para)
. standardized/normalized results struct union members
. added 'std' & 'var' dividers in .c file, like <pids>
. removed an obsolete #undef from procps_slabinfo_sort
. cleanup 'get' return logic (remove a redundant 'if')

<stat> ...............................................
. how did i miss relocating all these friggin' #undefs
. corrected an initialization fencepost used with numa <=== see Craig, here's a bug fix
. removed the extra trailing comma from enum stat_item
. standardized/normalized results struct union members
. added 'std' & 'var' dividers in .c file, like <pids>
. strengthen those parm checks in procps_stat_get func
. cleanup 'get' return logic (remove a redundant 'if')

<vmstat> .............................................
. standardized/normalized results struct union members
. added 'std' & 'var' dividers in .c file, like <pids>
. cleanup 'get' return logic (remove a redundant 'if')

[ virtually all of these tweaks reflect the author's ]
[ continuing pursuit of an unreasonable goal -- that ]
[ of a 'perfect' (plus 'pretty') C language program! ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
This commit is contained in:
Jim Warner 2016-06-14 00:00:00 -05:00 committed by Craig Small
parent 61647f1b95
commit 4a0e974b7f
9 changed files with 70 additions and 51 deletions
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21
proc/meminfo.c
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@ -224,6 +224,10 @@ MEM_set(SWAP_FREE, ul_int, SwapFree)
MEM_set(SWAP_TOTAL, ul_int, SwapTotal)
MEM_set(SWAP_USED, ul_int, derived_swap_used)
#undef setDECL
#undef MEM_set
#undef HST_set
// ___ Results 'Get' Support ||||||||||||||||||||||||||||||||||||||||||||||||||
@ -332,6 +336,10 @@ MEM_get(SWAP_FREE, SwapFree)
MEM_get(SWAP_TOTAL, SwapTotal)
MEM_get(SWAP_USED, derived_swap_used)
#undef getDECL
#undef MEM_get
#undef HST_get
// ___ Controlling Table ||||||||||||||||||||||||||||||||||||||||||||||||||||||
@ -456,16 +464,11 @@ static struct {
enum meminfo_item PROCPS_MEMINFO_logical_end = PROCPS_MEMINFO_SWAP_USED + 1;
#undef setNAME
#undef setDECL
#undef MEM_set
#undef HST_set
#undef getNAME
#undef getDECL
#undef MEM_get
#undef HST_get
#undef RS
#undef RG
// ___ Private Functions ||||||||||||||||||||||||||||||||||||||||||||||||||||||
static inline void assign_results (
@ -816,6 +819,8 @@ static struct stacks_extent *stacks_alloc (
// ___ Public Functions |||||||||||||||||||||||||||||||||||||||||||||||||||||||
// --- standard required functions --------------------------------------------
/*
* procps_meminfo_new:
*
@ -882,6 +887,8 @@ PROCPS_EXPORT int procps_meminfo_unref (
} // end: procps_meminfo_unref
// --- variable interface functions -------------------------------------------
PROCPS_EXPORT signed long procps_meminfo_get (
struct procps_meminfo *info,
enum meminfo_item item)
@ -904,9 +911,7 @@ PROCPS_EXPORT signed long procps_meminfo_get (
sav_secs = cur_secs;
}
if (item < PROCPS_MEMINFO_logical_end)
return Item_table[item].getsfunc(info);
return -EINVAL;
} // end: procps_meminfo_get

1
proc/meminfo.h
View File

@ -121,7 +121,6 @@ enum meminfo_item {
PROCPS_MEMINFO_SWAP_USED // ul_int
};
struct procps_meminfo;
struct meminfo_result {
enum meminfo_item item;

16
proc/pids.h
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@ -144,7 +144,7 @@ enum pids_item {
PROCPS_PIDS_VM_USED, // sl_int
PROCPS_PIDS_VSIZE_PGS, // ul_int
PROCPS_PIDS_WCHAN_ADDR, // ul_int
PROCPS_PIDS_WCHAN_NAME, // str
PROCPS_PIDS_WCHAN_NAME // str
};
enum pids_fetch_type {
@ -163,19 +163,17 @@ enum pids_sort_order {
};
struct procps_pidsinfo;
struct pids_result {
enum pids_item item;
union {
char s_ch;
int s_int;
signed char s_ch;
signed int s_int;
unsigned int u_int;
long sl_int;
signed long sl_int;
unsigned long ul_int;
unsigned long long ull_int;
char * str;
char ** strv;
char *str;
char **strv;
} result;
};
@ -198,6 +196,8 @@ struct pids_fetch {
stack -> head [ rel_enum ] . result . type
struct procps_pidsinfo;
int procps_pids_new (struct procps_pidsinfo **info, enum pids_item *items, int numitems);
int procps_pids_ref (struct procps_pidsinfo *info);
int procps_pids_unref (struct procps_pidsinfo **info);

7
proc/slabinfo.c
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@ -829,6 +829,8 @@ static int stacks_reconfig_maybe (
// ___ Public Functions |||||||||||||||||||||||||||||||||||||||||||||||||||||||
// --- standard required functions --------------------------------------------
/*
* procps_slabinfo_new():
*
@ -859,7 +861,7 @@ PROCPS_EXPORT int procps_slabinfo_new (
/* do a priming read here for the following potential benefits: |
1) see if that caller's permissions were sufficient (root) |
2) make delta results potentially useful, even is 1st time | */
2) make delta results potentially useful, even if 1st time | */
if ((rc = read_slabinfo_failed(p))) {
procps_slabinfo_unref(&p);
return rc;
@ -919,6 +921,8 @@ PROCPS_EXPORT int procps_slabinfo_unref (
} // end: procps_slabinfo_unref
// --- variable interface functions -------------------------------------------
PROCPS_EXPORT signed long procps_slabinfo_get (
struct procps_slabinfo *info,
enum slabinfo_item item)
@ -1056,5 +1060,4 @@ PROCPS_EXPORT struct slabinfo_stack **procps_slabinfo_sort (
qsort_r(stacks, numstacked, sizeof(void *), (QSR_t)Item_table[p->item].sortfunc, &parms);
return stacks;
#undef QSORT_r
} // end: procps_slabinfo_sort

2
proc/slabinfo.h
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@ -81,7 +81,7 @@ struct slabinfo_result {
signed int s_int;
unsigned int u_int;
unsigned long ul_int;
char * str;
char *str;
} result;
};

36
proc/stat.c
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@ -185,6 +185,12 @@ setDECL(SYS_DELTA_PROC_BLOCKED) { (void)T; R->result.s_int = S->new.procs_blocke
SYSsetH(SYS_DELTA_PROC_CREATED, s_int, procs_created)
setDECL(SYS_DELTA_PROC_RUNNING) { (void)T; R->result.s_int = S->new.procs_running - S->old.procs_running; }
#undef setDECL
#undef TIC_set
#undef SYS_set
#undef TICsetH
#undef SYSsetH
// ___ Results 'Get' Support ||||||||||||||||||||||||||||||||||||||||||||||||||
@ -244,6 +250,12 @@ getDECL(SYS_DELTA_PROC_BLOCKED) { return I->sys_hist.new.procs_blocked - I->sys_
SYSgetH(SYS_DELTA_PROC_CREATED, procs_created)
getDECL(SYS_DELTA_PROC_RUNNING) { return I->sys_hist.new.procs_running - I->sys_hist.old.procs_running; }
#undef getDECL
#undef TIC_get
#undef SYS_get
#undef TICgetH
#undef SYSgetH
// ___ Controlling Table ||||||||||||||||||||||||||||||||||||||||||||||||||||||
@ -314,17 +326,7 @@ enum stat_item PROCPS_STAT_TIC_highest = PROCPS_STAT_TIC_DELTA_GUEST_NICE;
enum stat_item PROCPS_STAT_logical_end = PROCPS_STAT_SYS_DELTA_PROC_RUNNING + 1;
#undef setNAME
#undef setDECL
#undef TIC_set
#undef SYS_set
#undef TICsetH
#undef SYSsetH
#undef getNAME
#undef getDECL
#undef TIC_get
#undef SYS_get
#undef TICgetH
#undef SYSgetH
#undef RS
#undef RG
@ -458,6 +460,7 @@ static int make_numa_hist (
( and be careful, this libnuma call returns the highest node id in use, )
( NOT an actual number of nodes - some of those 'slots' might be unused ) */
info->nodes.total = info->our_max_node() + 1;
if (!info->nodes.hist.n_alloc
|| !(info->nodes.total < info->nodes.hist.n_alloc)) {
info->nodes.hist.n_alloc = info->nodes.total + NEWOLD_INCR;
@ -469,7 +472,7 @@ static int make_numa_hist (
// forget all of the prior node statistics & anticipate unassigned slots
memset(info->nodes.hist.tics, 0, info->nodes.hist.n_alloc * sizeof(struct hist_tic));
nod_ptr = info->nodes.hist.tics;
for (i = 0; i < info->cpus.hist.n_alloc; i++) {
for (i = 0; i < info->nodes.total; i++) {
nod_ptr->id = nod_ptr->numa_node = PROCPS_STAT_NODE_INVALID;
++nod_ptr;
}
@ -808,6 +811,8 @@ static struct stat_stack *update_single_stack (
// ___ Public Functions |||||||||||||||||||||||||||||||||||||||||||||||||||||||
// --- standard required functions --------------------------------------------
/*
* procps_stat_new:
*
@ -922,6 +927,8 @@ PROCPS_EXPORT int procps_stat_unref (
} // end: procps_stat_unref
// --- variable interface functions -------------------------------------------
PROCPS_EXPORT signed long long procps_stat_get (
struct procps_statinfo *info,
enum stat_item item)
@ -930,6 +937,11 @@ PROCPS_EXPORT signed long long procps_stat_get (
time_t cur_secs;
int rc;
if (info == NULL)
return -EINVAL;
if (item < 0 || item >= PROCPS_STAT_logical_end)
return -EINVAL;
/* no sense reading the stat with every call from a program like vmstat
who chooses not to use the much more efficient 'select' function ... */
cur_secs = time(NULL);
@ -939,9 +951,7 @@ PROCPS_EXPORT signed long long procps_stat_get (
sav_secs = cur_secs;
}
if (item < PROCPS_STAT_logical_end)
return Item_table[item].getsfunc(info);
return -EINVAL;
} // end: procps_stat_get

2
proc/stat.h
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@ -60,7 +60,7 @@ enum stat_item {
PROCPS_STAT_SYS_DELTA_INTERRUPTS, // s_int
PROCPS_STAT_SYS_DELTA_PROC_BLOCKED, // s_int
PROCPS_STAT_SYS_DELTA_PROC_CREATED, // s_int
PROCPS_STAT_SYS_DELTA_PROC_RUNNING, // s_int
PROCPS_STAT_SYS_DELTA_PROC_RUNNING // s_int
};
enum stat_reap_type {

6
proc/vmstat.c
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@ -1358,6 +1358,8 @@ static struct stacks_extent *stacks_alloc (
// ___ Public Functions |||||||||||||||||||||||||||||||||||||||||||||||||||||||
// --- standard required functions --------------------------------------------
/*
* procps_vmstat_new:
*
@ -1424,6 +1426,8 @@ PROCPS_EXPORT int procps_vmstat_unref (
} // end: procps_vmstat_unref
// --- variable interface functions -------------------------------------------
PROCPS_EXPORT signed long procps_vmstat_get (
struct procps_vmstat *info,
enum vmstat_item item)
@ -1446,9 +1450,7 @@ PROCPS_EXPORT signed long procps_vmstat_get (
sav_secs = cur_secs;
}
if (item < PROCPS_VMSTAT_logical_end)
return Item_table[item].getsfunc(info);
return -EINVAL;
} // end: procps_vmstat_get