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| author | Thomas Haller <thaller@redhat.com> | 2016-09-05 14:12:41 +0200 |
|---|---|---|
| committer | Thomas Haller <thaller@redhat.com> | 2016-09-08 00:21:21 +0200 |
| commit | b2016fd2a52b82d45324526c965e7545d026cebe (patch) | |
| tree | 14bdef95b505db556eaa4bf7899ef247a732d3af | |
| parent | c1b4b99a3c758f320c369a8daadb219eeb50ee83 (diff) | |
| download | NetworkManager-b2016fd2a52b82d45324526c965e7545d026cebe.tar.gz | |
shared: add NM_MIN()/NM_MAX() macros to replace glib's MIN()/MAX()
| -rw-r--r-- | shared/nm-utils/nm-macros-internal.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/shared/nm-utils/nm-macros-internal.h b/shared/nm-utils/nm-macros-internal.h index c66cb53954..2067dba2a5 100644 --- a/shared/nm-utils/nm-macros-internal.h +++ b/shared/nm-utils/nm-macros-internal.h @@ -542,6 +542,50 @@ nm_strcmp_p_with_data (gconstpointer a, gconstpointer b, gpointer user_data) /*****************************************************************************/ +/* Taken from systemd's UNIQ_T and UNIQ macros. */ + +#define NM_UNIQ_T(x, uniq) G_PASTE(__unique_prefix_, G_PASTE(x, uniq)) +#define NM_UNIQ __COUNTER__ + +/*****************************************************************************/ + +/* glib's MIN()/MAX() macros don't have function-like behavior, in that they evaluate + * the argument possibly twice. + * + * Taken from systemd's MIN()/MAX() macros. */ + +#define NM_MIN(a, b) __NM_MIN(NM_UNIQ, a, NM_UNIQ, b) +#define __NM_MIN(aq, a, bq, b) \ + ({ \ + typeof (a) NM_UNIQ_T(A, aq) = (a); \ + typeof (b) NM_UNIQ_T(B, bq) = (b); \ + ((NM_UNIQ_T(A, aq) < NM_UNIQ_T(B, bq)) ? NM_UNIQ_T(A, aq) : NM_UNIQ_T(B, bq)); \ + }) + +#define NM_MAX(a, b) __NM_MAX(NM_UNIQ, a, NM_UNIQ, b) +#define __NM_MAX(aq, a, bq, b) \ + ({ \ + typeof (a) NM_UNIQ_T(A, aq) = (a); \ + typeof (b) NM_UNIQ_T(B, bq) = (b); \ + ((NM_UNIQ_T(A, aq) > NM_UNIQ_T(B, bq)) ? NM_UNIQ_T(A, aq) : NM_UNIQ_T(B, bq)); \ + }) + +#define NM_CLAMP(x, low, high) __NM_CLAMP(NM_UNIQ, x, NM_UNIQ, low, NM_UNIQ, high) +#define __NM_CLAMP(xq, x, lowq, low, highq, high) \ + ({ \ + typeof(x)NM_UNIQ_T(X,xq) = (x); \ + typeof(low) NM_UNIQ_T(LOW,lowq) = (low); \ + typeof(high) NM_UNIQ_T(HIGH,highq) = (high); \ + \ + ( (NM_UNIQ_T(X,xq) > NM_UNIQ_T(HIGH,highq)) \ + ? NM_UNIQ_T(HIGH,highq) \ + : (NM_UNIQ_T(X,xq) < NM_UNIQ_T(LOW,lowq)) \ + ? NM_UNIQ_T(LOW,lowq) \ + : NM_UNIQ_T(X,xq)); \ + }) + +/*****************************************************************************/ + static inline guint nm_encode_version (guint major, guint minor, guint micro) { /* analog to the preprocessor macro NM_ENCODE_VERSION(). */ |